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Guides

Straight answers to real PDF questions

Why a spreadsheet loses its columns, what a password on a PDF actually protects, why you cannot select the text in a scan. Each guide answers one question properly, and links to the tool that does the job.

Want the clicks rather than the why? The step-by-step guides walk through one tool at a time. Signing a document? Start at the signing hub. Choosing between PDF tools? See how KovaPDF compares with the others.

Converting files28

Word, Excel, PowerPoint, images, OpenDocument and archives in and out of PDF, and why a conversion comes out looking different.

How to convert a PDF to Word (and what usually goes wrong)Upload the PDF to a converter, let it read the text and rebuild the layout, then download the .docx, but the result is only editable if the PDF contains real text rather than a scanned picture of text.6 min read

How to convert Excel to PDF without losing columnsTurn on fit-to-one-page-wide before converting: it scales the sheet horizontally so every column lands on the page, while rows continue onto as many pages as they need.5 min read

How to turn a web page into a PDF that actually looks rightUse a converter that renders with a real browser engine and turn on background graphics. The two reasons web pages usually print wrong are a weak rendering engine and the browser's default of dropping backgrounds.5 min read

How to turn a CSV into a PDF table people can actually readUse a converter that measures each column against its contents and detects the delimiter, rather than opening the CSV in a spreadsheet program and accepting its import defaults.6 min read

How do I get a table out of a PDF and into Excel?Convert the PDF to XLSX rather than copying and pasting. A converter reads the position of every number and rebuilds the columns, which pasting cannot do.6 min read

How do I turn a PDF back into an editable PowerPoint?A converter puts each PDF page on its own slide and recovers the text as editable text boxes, but the original layout, animations and master slides are gone, because a PDF never contained them.5 min read

How to convert PDF pages to JPG or PNGRender the pages you need as JPG for photographic content or PNG for crisp graphics and text. Choose the resolution for where the images will be displayed or printed. Rendering makes pictures of the pages, so keep the original PDF for text, links and document structure.3 min read

Why do my fonts change when I convert Word to PDF?Because the font you used was not available to whatever performed the conversion, so it was substituted for a similar one with different letter widths, which shifts every line after it.5 min read

How do I open ODT, ODS and ODP files without LibreOffice?Convert it to PDF. The layout is preserved exactly and the result opens in any browser, with nothing to install.5 min read

How to turn a ZIP of mixed files into one PDFUse ZIP to PDF to convert supported files and combine their pages in the selected order. Name the components deliberately and reconcile the output against the archive contents. A finished PDF is not proof that every entry was convertible.3 min read

How to convert a text file to PDF and preserve its layoutPlain text has characters and line breaks but no fixed paper layout. Choose a font, page size and wrapping rule before converting. Keep a monospace font when spaces define columns, and inspect long lines and page breaks in the output.3 min read

How to convert PowerPoint to PDF without layout surprisesConvert the deck with its original slide dimensions, then compare the PDF against the presentation. Check the longest text box, smallest chart label and final slide first. PDF preserves static pages, so animations, video and presenter notes need a separate delivery decision.3 min read

What is PDF/A, and how is it different from a normal PDF?PDF/A is an ISO standard (ISO 19005) for PDFs that must stay readable for decades: everything needed to display the file, such as fonts and a colour profile, has to be inside it, and anything that depends on outside software or files, such as scripts, encryption or embedded media, is not allowed.5 min read

PDF/A-1b, 2b, 2u, 3b or 3u: which PDF/A should I choose?If nobody told you which, choose PDF/A-2b; choose PDF/A-1b only when a system asks for it, a 'u' version when the text must stay searchable and copyable, and PDF/A-3 when attached files such as XML data must travel with the document.4 min read

Does my court filing or archive need PDF/A? How to prepare a PDF for submissionWhen a court, archive or agency asks for PDF/A, finish everything else first (merging, OCR, compressing), convert to PDF/A-2b unless their rules name another version, and keep the original, because conversion removes passwords, scripts and digital signatures.5 min read

Convert PDF to JPG without losing quality: what is possible?A JPG cannot preserve a vector PDF without any change: rendering fixes a pixel resolution and JPG encoding is lossy. You can reduce visible damage by rendering enough pixels for the destination and avoiding repeated JPG saves. Use PNG when you need to preserve the rendered pixels exactly.3 min read

Convert PowerPoint to PDF without PowerPoint installedYou can submit the presentation file to PowerPoint to PDF without installing a presentation app on your device. Use the original file rather than screenshots or a renamed attachment. Review the downloaded pages before sending them on, because a successful conversion does not prove every slide looks right.3 min read

How to convert a Notepad file to PDF without broken charactersSave the Notepad document as a real TXT file, then open that file in TXT to PDF. Renaming .txt to .pdf does not convert it. If characters are already wrong in the saved text, fix the encoding before creating the PDF.3 min read

Convert a ZIP of images to one PDF in the right page orderCheck image filenames and orientation before converting the ZIP. Name sorting can put page2 before page10, but only your review can confirm that the pictures form the intended document. Compare the image count with the PDF pages and inspect both ends of the sequence.3 min read

Why did my JPG to PDF come out sideways, blurry or too big?Sideways pages come from phone orientation data, blur comes from the photo itself rather than the conversion, and a huge file means large photos. Use a converter that applies the phone's orientation, check the photo before converting, and compress the finished PDF if it is too big to send.4 min read

How do I turn screenshots into one PDF?Add the screenshots to PNG to PDF in the order you want, choose Match the image so each page takes the screenshot's shape, and download one PDF. Run it through OCR PDF afterwards if you need to search or copy the text.3 min read

How to save one page of a PDF as a JPGChoose the page by its position in the PDF, select that page alone in PDF to JPG and render it. Reopen the downloaded image and compare its heading or reference with the intended page. A printed page number can differ from the page position in the file.3 min read

How do I put a PDF page into PowerPoint or Word as a sharp picture?Convert the page with PDF to PNG, which keeps text and lines crisp, then insert the PNG as a picture. For part of a page, crop the picture after inserting it; for a page you need to edit, convert the PDF with PDF to PPT or PDF to Word instead.3 min read

How do I turn iPhone HEIC photos into a PDF?Add the HEIC photos to HEIC to PDF as they are, put them in order and create the PDF. Each photo becomes a high-quality JPG inside one PDF that opens on any phone or computer, so there is no need to convert them to JPG one by one first.3 min read

What kinds of files can be converted to PDF, and back?Almost anything you can print can become a PDF: Word, Excel and PowerPoint files, OpenDocument files, photos (including iPhone HEIC), text, CSV, web pages and ZIP files of documents. Going the other way, a PDF can become Word, Excel, PowerPoint, JPG, PNG, plain text or an archival PDF/A.3 min read

Why is converting a PDF back to Word or Excel never perfect?A PDF stores positioned glyphs rather than paragraphs, tables or slides, so converting back is reconstruction from appearance. Text usually survives, structure is inferred, and anything the original expressed through layout alone is guesswork.3 min read

What changes when an ODT, ODS or ODP file becomes a PDF?Exporting an OpenDocument file to PDF fixes its layout permanently: text and images are preserved, formulas become their results, styles become appearance, and anything that depended on a font your machine has must be embedded or substituted.3 min read

Why does a web page look different when I save it as a PDF?A web page is a continuous, flexible layout with no page size, so turning it into a PDF forces a width, cuts it into pages and applies whatever print stylesheet the site has, which is frequently different from what you were looking at.3 min read

Page layout6

Page sizes, margins, headers, page numbers and content that will not fit.

Why does my content not fit the page width?Because the content is wider than the paper and the converter's default is to cut it into vertical strips rather than scale it. Turning on fit-to-width, rotating the page or using larger paper all solve it.5 min read

How to add page numbers to a PDF and skip the coverChoose the file pages that need numbers, then set the first printed number separately. A cover can remain file page 1 while the next page displays 1. Apply numbering after the document order is final, and verify both the first and last labels.3 min read

Reduce PDF page count without shrinking textYou can reduce page count without shrinking text when consecutive pages contain enough unused space for their content to fit together. Use a full-size repacking mode and inspect its proposed groups. Dense pages may not combine at all, and a lower page count does not guarantee fewer bytes.3 min read

Add blank pages to a PDF for double sided printingIn an ordinary duplex job that begins on a front side, odd file pages print on fronts and even file pages on backs. If a new section would begin on an even position, insert a blank before it. Recalculate later starts after each insertion and verify the printer preview.3 min read

Why does my PDF have so many nearly-empty pages?Word processors start sections on new pages, refuse to split tables and add page breaks before headings, so a document with little content can still be very long, and the fix is either to change the template or to recombine the sparse pages afterwards.3 min read

Add a header, footer and page numbers to a PDFUse a header or footer when every page needs repeated context such as a project name, filename or issue date. Place each item in its own left, centre or right slot. Preview the longest expanded text before exporting so references and page counts stay readable.3 min read

Organising pages11

Merging, splitting, rotating and deleting pages, and what to do when a PDF will not let you.

How do I delete a page from a PDF on my iPhone or Android phone?Open Delete Pages from PDF in your phone's browser and choose the file. Delete the page you are looking at, or type the pages to remove, confirm, then tap Save. The trimmed copy downloads, with no app or account needed.4 min read

How to merge PDFs, and keep them in the right orderAdd the files, put them in the order you want before merging, and download the combined PDF. The common trap is alphabetical sorting, which puts page10 before page2.5 min read

Why can't I delete pages from a PDF?Usually because you are viewing the PDF rather than editing it (most readers deliberately have no page tools) or because the file carries a restriction on rearranging pages.5 min read

Can I split a PDF without Adobe Acrobat?Yes. Splitting only rearranges pages that are already in the file, so it needs no Acrobat licence and no installed software at all.6 min read

How to rotate pages in a PDF so they stay rotatedYour viewer's rotate button only changes the view, to make it stick you have to rotate the pages and save the file, which writes the rotation into the document.5 min read

How to combine photos into one PDFAdd the images in the order you want them, choose whether each page matches the image or a standard paper size, and download one PDF containing them all.5 min read

Merge 6 PDF pages into 1: what happens to quality?Six whole pages can be placed on one sheet, but their text must usually become much smaller. Retaining text objects is different from retaining comfortable reading size. If the pages are sparse, full-size content repacking may achieve a similar count without fixed six-up scaling.3 min read

Does combining PDF pages break links, forms or text?Text stays selectable and vectors stay sharp because pages are embedded as content, but links and form fields are annotations rather than content and are lost, so pages carrying them should be left alone rather than combined.3 min read

How do I send mortgage or rental documents as one PDF?Turn phone photos into PDF pages, merge everything in the order of the lender's or agent's checklist, keep every page of each statement, and compress the result if the portal has a size limit. If the portal has a separate slot for each document, make one PDF per slot.5 min read

Why does my PDF look right on screen but print sideways?Because rotation in a PDF is a flag attached to the page rather than a change to the page itself. Most viewers apply it and some printers and tools ignore it, so the fix is to bake the rotation in rather than to keep flipping the view.3 min read

Insert a blank page or divider into a PDFInsert the new page before the file page that should follow it. Match the surrounding paper size and verify the saved order. A blank can remain space for notes or become a divider when you add a section heading in the editor.3 min read

Working with scans10

Scanned pages are pictures: how to make them searchable, editable and readable.

Why is my scanned PDF so large?A scanned PDF stores page pictures, often with more pixels or colour information than the task needs. Doubling scan resolution roughly quadruples the pixel area. Choose capture settings for the smallest meaningful detail, then measure and inspect the saved PDF rather than treating a DPI setting as a quality guarantee.3 min read

Why can't I edit text in my PDF?A PDF can show words without storing editable paragraphs. Its pages may contain images, outlined letters, protected content or flattened form fields. Identify which case you have before choosing OCR, an authorised unlock or an edit to the original source.3 min read

How to make a PDF readable for ChatGPTCheck that the PDF exposes the words you need in a sensible order. If it is a scan, recognise and proofread the text; if its layout extracts badly, prepare a checked text copy with page references. A successful upload does not establish that every page or table was read correctly.3 min read

A paper receipt linked to a spreadsheet, with one faded digit enlarged and checked before it goes into a cell

How to convert scanned receipts to Excel and check the numbersPhotograph one receipt per image, let the tool read it, then check the supplier, date, currency and totals against the receipt and correct anything that is wrong. Mark each receipt reviewed, export to Excel or CSV, and open the file to check a few rows before using it.9 min read

How to improve the quality of a scanned PDF before sending itImprove a scanned PDF by fixing orientation and visibility while preserving every required mark and page. Enhancement can improve contrast, but it cannot recover clipped content or detail never captured. Review the saved file at its intended reading size before adding OCR or reducing its size.3 min read

Copy text from a PDF when copying does not workFirst identify whether copying returns nothing, nonsense characters or text in the wrong order. Extract existing text when it is usable; recognise the visible page when it is only an image or its character mapping is broken. Compare the recovered words with the page before reusing them.3 min read

Why can't I select text in my PDF?The page may contain a picture of words rather than text objects. It may also contain outlined letters, copy restrictions or a partial text layer. Test several pages and compare selection with text extraction before deciding that the whole PDF needs OCR.3 min read

How do I get the text out of a screenshot or a photo?Run the image through optical character recognition, which reads the shapes of the letters and gives you back real, selectable text.5 min read

How to edit text in a scanned PDF and check the resultA scan stores printed words as pixels, so first recognise the text before editing it. Check the recognised wording against the image, make the intended correction and inspect the saved page. Adding a text layer alone does not erase the original printed words.3 min read

How to clean up a grey or speckled scanned documentStart with small contrast and noise adjustments, then compare faint strokes with the original. A hard black and white threshold can clear the background but erase light marks. Upscaling adds pixels for processing; it does not recreate detail missing from the capture.3 min read

Getting the most out of PDFs28

File size, email limits, printing and the small things that make a PDF easier to use.

PDF file size exceeds the limit allowed: how to make it fitFind the receiving form’s actual size cap, then create and measure a smaller working copy. Use a target below the cap and reopen the result before uploading. If readable compression cannot meet the requirement, ask which alternative submission method is accepted.3 min read

How do I remove the white box when editing a PDF?The box appears because the editor hid the old words under a white rectangle instead of removing them; on a colored or watermarked page it shows. An editor that takes the old letters out of the file leaves no box to remove.3 min read

A one column CV with notes for the job requirements, education and a final file check placed around it

How to write a CV, step by stepStart from the job advert, choose the section order that suits your experience, and write specific evidence for each role. Add optional sections only when they help, check the reading order, then download the PDF or Word file the employer asked for and open it before applying.9 min read

An executive CV with each role linked to a note about the team, a result and supporting evidence

Executive CV template: how to write one for a management roleUse a short profile, then recent roles with their scale and a few achievements you can back up for each. Keep older roles brief, add relevant training and current credentials, and check the reading order and the file the employer asked for before applying.9 min read

A table with a flagged cell, a corrected table and a chart feeding into a project entry on a CV

How to write a data analyst CV: skills, projects and examplesTie each skill to work or a project that shows the question, your part, the data checks and the result. Keep job titles and dates clear, label study projects as such, and open the exported file before applying.9 min read

Two versions of a document side by side, with a removed line, an added paragraph and a changed word linked between them

How to compare two PDF files and see what changedPut the earlier PDF in Original and the revised PDF in Revised in Compare PDF. Read the text changes and the outlined visual changes together, account for added or moved pages, and check important amounts and conditions in the original files before relying on the report.9 min read

A freelance invoice between a checklist of completed milestones and an envelope with a covering note

How to invoice as a freelancer, with a worked exampleName the client and the agreed work, give the invoice a unique number and dates, enter each piece of work as its own row, and record any deposit as a payment rather than a discount. Check every total, download the PDF and open that file before sending it.9 min read

How to make a PDF fillable for free, without AcrobatOpen the PDF in PDF Forms, accept the fields it finds on the blank lines and boxes, add any it missed, and download: the result has real PDF form fields that can be filled in and saved in Acrobat, Reader, Chrome, Edge, Firefox and other PDF apps.5 min read

How to turn a scanned paper form into a fillable PDFOpen the scan in PDF Forms and choose Find fields on the scan: it measures the lines and boxes in the page image, reads the labels beside them, and places real form fields on top of the unchanged scan for you to accept, adjust and download.4 min read

How to add check boxes, dropdowns and date fields to a PDF formIn PDF Forms, pick the field type on the left and click or drag where it belongs: a check box for yes or no, choice buttons when only one answer is allowed, a dropdown or list box for a longer list, and a date field that can hold a fixed format such as dd/mm/yyyy.5 min read

How do I summarize a research paper or a long report PDF?Open it in Summarize PDF: your browser reads the text, and an AI writes the key points beside the document. Only about the first 60,000 characters go to the AI, so for a long paper, remove the references and appendices first, or summarise it in parts.4 min read

How to get a PDF under 100 KB without making it unreadableTreat 100 KB as a measured byte limit, not a quality setting. Aim below 100,000 bytes when the receiver’s interpretation is unclear, then inspect the actual output. Some complete PDFs cannot fit that small without unacceptable loss, so keep the original and confirm an accepted alternative when needed.3 min read

Compress PDF or reduce page count: which do I need?Use compression for a file-size problem, page repacking for suitable sparse document layout, and printer settings for paper use. These operations change different quantities. Measure the output that matters instead of treating fewer pages, fewer bytes and fewer sheets as interchangeable.3 min read

Print a long PDF on fewer sheets of paperCount physical sheets separately from PDF pages. Duplex uses both sides; multiple pages per side reduce the size of each printed page. Preview the actual print setup and test a detailed sheet before applying both settings to a long document.3 min read

How do I sign a PDF on my iPhone or Android phone?Save the PDF to your phone, open Sign PDF in your browser and choose the file. Tap Draw, sign with your finger, drag the signature onto the line, add the date, then tap Save and Download PDF. No printer, app or account is needed.6 min read

A filled form, the same form open in a viewer with one field blank, and a saved file with that field enlarged

Why won't my fillable PDF form save what I typed?Usually because the answers went into a temporary copy, or were saved in a way the other person's app does not draw. Save the file first, fill it in Adobe Acrobat Reader or print it to PDF to make the answers part of the page, or type them onto the page with Sign PDF. If you built the form in PDF Forms, answers typed in Preview are only a test and are not saved.10 min read

How do I compress a PDF on a Mac without blurry pages?Preview's Reduce File Size filter applies one heavy setting to every picture, which is why scans come out blurry. Compress PDF lets you choose how far to go, or set the size the file must fit under, and text stays sharp at every level.5 min read

How do I make a PDF smaller on my iPhone?The Files app cannot change a PDF's file size. Open Compress PDF in Safari, pick the PDF from Files, choose Recommended or type the size limit you were given, and the smaller copy downloads to the Files app.5 min read

How do I get a PDF small enough for court e-filing?Find the court's per-file limit, compress the PDF with a size target set just under it, and make scanned pages searchable if the court asks for that. If it still will not fit, file the exhibits as separate attachments where the rules allow it.5 min read

How do I summarise a long PDF without uploading the file?Open the PDF in Summarize PDF. Your browser reads the text out of the file on your own machine, and only that text is sent to an AI service to write the summary. The document itself is never uploaded, and we do not keep anything afterwards.4 min read

How do I translate a PDF without sending it to a server?Recent Chrome and Edge include an on-device translator a web page can use, so a PDF's text can be translated with nothing uploaded, at the cost of a one-time language-pack download, and with real gaps in which language pairs are supported.3 min read

Why does translated text never fit the original layout?Translation changes the length and the height of the text but not the boxes it has to sit in, so a faithful translation almost always overflows or under-fills the original layout, which is why translated text is best taken out, read, and placed deliberately rather than substituted in place.3 min read

Why is my PDF so large?PDF size depends on the objects stored inside it, not just its page count. Large scans, repeated images, embedded fonts and retained revisions can dominate the bytes. Identify the likely payload before reducing quality or rearranging pages.3 min read

A4 vs Letter: why your PDF prints with the wrong marginsA4 is taller and narrower than Letter, so printing one on the other either shrinks the page slightly or crops it. Set the document to the size it will actually be printed on.6 min read

How to sign a PDF without printing itOpen the PDF in an editor, add your signature as an image or drawing, position it and save. No printing, scanning or posting involved.6 min read

How to add a watermark to a PDFPlace your text or logo over every page at an opacity low enough to read through. It marks the document's status clearly but does not prevent anyone copying it.5 min read

Why won't my PDF attach to an email?Check whether the failure happens while attaching, while sending or after delivery is rejected. Email encoding increases the data carried by binary attachments, and the recipient can impose a different limit from the sender. Measure the complete attachment set before choosing a smaller copy or an accepted alternative.3 min read

Free online PDF tools compared: limits, accounts and where your file goesAll five services do the everyday jobs well: merge, split, compress, convert and sign. They differ in how much you can do for free, how large a file can be, whether an account is needed, where your file is processed, and whether they can check a signed PDF. The table below lists the facts as each service stated them, so you can pick by the limit that matters to you.7 min read

Security8

Passwords, print and copy restrictions, and removing information for good.

How to password-protect a PDF, and what it really protectsAdd an open password and the file is genuinely encrypted. Nothing can read it without that password. The separate permission settings, like blocking copying, are requests that only some readers honour.5 min read

My PDF opens but won't let me print or copy. What now?That file has owner restrictions rather than an open password. There is no password to type, and the restrictions can be removed without one.5 min read

How do I remove the password from a PDF I own?Open the file with its password and save a fresh copy without encryption, which is possible precisely because you could open it in the first place.5 min read

Which PDF tools work without uploading your file, and which ones need the server?Merging, splitting, rotating, resizing, cropping, reordering and deleting pages, adding page numbers, protecting and unlocking, reading text out of PDFs and pictures, resizing photos, converting pictures and text files to PDF and PDF pages to pictures, and the Bijoy converters all run inside your browser, so the file is never uploaded. Conversions to and from Word, Excel and PowerPoint, OCR, compression and the editor need the server, which deletes the working copy when the result is built.5 min read

How to redact a PDF permanently, not just black it outUse a tool that deletes what is under each box instead of drawing over it: in Redact PDF you mark text, areas or search results, apply, and the marked content is removed from the file before a box is drawn where it was.7 min read

Why can blacked-out text in a PDF still be read, and how do I check mine?Because a black box drawn on a PDF is just another shape on top of the page: the text underneath is still stored in the file, so anyone can copy, search or extract it unless a redaction tool actually deleted it.5 min read

How to redact personal data from a PDF before sharing it (GDPR and subject access requests)Search the document for every name, email address, phone number, account number and ID belonging to people the recipient should not see, redact each match so it is deleted rather than covered, clear the document properties, and check the finished file before sending it.6 min read

How do I watermark a copy of my ID or passport before sending it?Put the copy into a PDF and add a text watermark across the photo and details that says who the copy is for, why and when. A copy that leaks is then marked for one purpose and much less useful to anyone else.5 min read

Signatures explained18

Certificates, timestamps, trust lists and what a signature check result means, in plain words.

What is a digital signature in a PDF, and why does my signed PDF say it has none?A signature you can see on a page (drawn, typed, scanned or stamped) is a picture. A digital signature is invisible proof, made with a certificate, that the document has not changed since it was signed and who signed it. A PDF can show a signature and still contain no digital signature at all.7 min read

What is a digital certificate, and what does it prove in a PDF?A digital certificate binds a public key to a named subject and is signed by an issuer. A PDF signature uses the corresponding private key to protect a particular document revision. Whether a recipient should trust the name depends on the issuer, identity checks and validation policy.4 min read

What is a trusted timestamp, and why does a signature need one?A trusted timestamp is an independent record of when you signed, made by an outside service that nobody involved in the document controls. Without one, the only proof of the signing time is your own computer's clock, and a clock can be wrong, or changed on purpose.4 min read

What long term validation means for a PDF signatureLong term validation stores certificate and revocation evidence with a signed PDF so later checks depend less on outside records. A trusted signature timestamp provides a reference time. LTV is an evidence package, not a guarantee that every reader or future policy will accept the signature.3 min read

What does an archive timestamp add to a signed PDF?An archive timestamp is a second, independent timestamp taken over the whole finished file (signature, evidence and all) so that the stored evidence itself is proved to be original and untouched. It is the last step for documents meant to survive decades.4 min read

What does 'certify the document' mean, and which permission level should I pick?Certifying means signing as the document's author and stating what anyone else is allowed to do to it afterwards. You choose one of three levels: nothing at all, filling in forms and signing, or those plus comments. Anything beyond the level you chose shows as a change in PDF readers.4 min read

What does 'lock the document after signing' do?Locking freezes the document's form fields at the moment you sign, so nobody can type into them or change what was typed. It does not lock the pages, the text or the ability to sign. Those are separate things.3 min read

PFX and P12 certificate files explained: contents, passwords and PDF signingPFX and P12 are two extensions for a PKCS#12 container. A usable signing container holds your private key and the matching certificate, usually with issuer certificates too. The extension alone does not prove that the key is present or that the certificate is trusted.4 min read

Signing with a USB token or smart card: what it is and why the key never leaves itA signing token is a small device that holds your private key and refuses to hand it over. It signs things for you instead. A web page cannot talk to one directly, so a small app on your computer passes the request to the token, which asks for your PIN before it signs.4 min read

What does a self-signed Digital ID prove, and what does it not?A self-signed Digital ID proves the document has not changed since it was signed, and shows the name you typed. Nobody has checked that name, so other people's software shows the signer as unknown until they choose to trust your certificate.4 min read

Visible stamp or invisible signature: which should I choose?A digital signature is invisible by default. It lives inside the file, not on the page. A visible stamp is an optional label saying a signature is there. Both are exactly the same signature underneath; only the appearance differs.4 min read

SHA-256, SHA-384, SHA-512: hash algorithms explained without mathsA hash is a short fingerprint of a file: change one character and the fingerprint changes completely. SHA-256, 384 and 512 are three fingerprint sizes. Automatic picks the right one for your key, and that is the setting almost everyone should leave alone.4 min read

How to read a signature check result: intact, who signed, and trustedA signature check answers three separate questions: has the document changed, who does the certificate say signed it, and does anyone independent vouch for that certificate. A good result on one does not imply a good result on the others.5 min read

What is a certificate chain, and what is a root?A certificate chain is a line of vouching: your certificate is vouched for by the one that issued it, which is vouched for by the one above, up to a root that vouches for itself. Software trusts a signature by following that line to a root it already recognises.4 min read

What is revocation checking (OCSP and CRL), and why does it matter?Certificates can be cancelled early, like a stolen bank card. Revocation checking is the step where a verifier asks the issuer whether this particular certificate was cancelled, by a quick single question (OCSP) or by downloading the issuer's cancellation list (CRL).4 min read

EU trusted lists and 'qualified' signatures, in plain wordsThe EU trusted lists are official registers, published by each European country, of the providers allowed to issue regulated certificates. A qualified electronic signature is one made with a qualified certificate and a secure device, and it carries the strongest standing under EU law.4 min read

What is Adobe's Approved Trust List (AATL)?The AATL is Adobe's own list of certificate authorities that Acrobat and Reader trust out of the box. If your certificate chains to one of them, Acrobat shows a green tick; if not, it shows the signature as valid but the signer as unknown.4 min read

Why a picture of a signature is not a signatureA drawn, typed, scanned or pasted signature is a picture on the page. Pictures can be copied and moved, and nothing in the file records if the text around them changes. A digital signature is invisible proof inside the file that the document has not changed.4 min read

Sending for signature8

Getting other people to sign: order, roles, codes and the record you get at the end.

Signing order: one after another, or everyone at once?With 'Sign in order' on, each person is emailed only when the one before them has finished. With it off, everybody is emailed at the same time and can sign whenever they like.4 min read

Signer, approver, witness, copy-only: which role should each person have?A signer fills in their fields and signs. An approver reviews and approves without signing. A witness signs a witness block after the person they witness. Someone set to receive a copy does nothing and simply gets the finished document.4 min read

Access codes and one-time email codes: when do you need them?An access code is a short code you tell the signer yourself, by phone or message, which they must type before the document will open. A one-time email code is different: it proves whoever used a public signing link really owns the email address they typed.4 min read

What is a certificate of completion, and why does it matter?A certificate of completion is a report attached to the finished document listing every person involved, what they did, when, and from which address, plus the document's fingerprint. It is the evidence that the signing actually happened the way it appears to.4 min read

Reassigning a signature: what happens when someone passes their turn onReassigning lets a recipient hand their turn to a colleague, with a reason. Their fields move to the new person, the sender is told, and the audit trail keeps both names, the time and the reason forever.4 min read

Templates and bulk sending: how to send the same document many timesA template saves the documents, the fields, the message and the settings, with each recipient turned into a named role you fill in later. From a template you can send one request, send to a whole list from a spreadsheet, or publish one public link.4 min read

Why sending a document for signature is worth more than emailing a PDFEmailing a PDF back and forth leaves you with a file and a mailbox. Sending it for signature leaves you with a single finished document, a record of who did what and when, and a seal that makes later changes detectable.4 min read

Does Docusign have a free plan?Not for sending. When we read Docusign's plans page there was no published free plan for sending documents. A free Docusign account can sign documents people send you and sign its own uploads; sending starts with the Personal plan, $11 a month on an annual plan billed monthly, with 5 envelopes a month.3 min read

E-signature law31

Whether an electronic signature is valid in a given country, and which documents still need paper.

Which electronic signatures are legally valid in the EU? eIDAS SES, AdES and QES explainedAll three levels of electronic signature are legally valid in the EU. Under Article 25 of the eIDAS Regulation (EU) No 910/2014, no court may reject a signature just because it is electronic or is not qualified, and a qualified electronic signature (QES) has the same legal effect as a handwritten one in every member state. Whether a particular document needs a QES, a handwritten signature or a notary is decided by each country's own law.12 min read

Are electronic signatures legal in the UK? Deeds, wills, leases and ScotlandYes. In England and Wales an electronic signature can validly sign most documents, including contracts that the law requires to be signed, as long as the signer intended to authenticate the document; the Law Commission confirmed this in 2019 and courts have accepted typed names in emails. Deeds still need a witness who is physically present, wills must be signed on paper in front of two witnesses, and Scotland has its own rules requiring advanced or qualified signatures for some documents.11 min read

Are electronic signatures legal in Germany? Schriftform, Textform and QESYes. Most German contracts need no particular form, so any electronic signature is valid. Where the BGB requires Schriftform, only a qualified electronic signature (QES) can replace the handwritten signature, and for some documents, such as dismissals and termination agreements under section 623 BGB and personal guarantees, even that is excluded. Property purchases, GmbH share transfers and notarial wills still need a notary.10 min read

Are electronic signatures legal in France? Code civil, eIDAS and notairesYes. Articles 1366 and 1367 of the Code civil give electronic writing and signatures the same evidential value as paper, provided the signer can be identified and the document's integrity is guaranteed. Only a qualified electronic signature is presumed reliable; for other signatures the person relying on them must prove reliability. Handwritten wills, some family-law and personal guarantee documents, and property sales before a notaire have special rules.8 min read

Are electronic signatures legal in Spain? Ley 6/2020, FNMT and DNIeYes. Spain follows the eIDAS Regulation and Ley 6/2020, and the Código Civil lets most contracts be made in any form, so electronic signatures are valid. If a signature made with a qualified trust service is challenged in court, it is presumed genuine. Property transfers that need registering, and notarial wills, still go through a notary; a holographic will must be handwritten.9 min read

Are electronic signatures legal in Italy? Firma digitale, FEA and the CADYes. Under the Codice dell'Amministrazione Digitale (D.Lgs. 82/2005), a document signed with a firma digitale, another qualified signature or an advanced electronic signature (FEA) meets the written-form requirement and has the evidential value of a signed private document under article 2702 of the Civil Code. A simple electronic signature is weighed freely by the judge. Property transfers and the other contracts in article 1350 nos. 1-12 of the Civil Code need a qualified or digital signature, and holographic wills must be handwritten.9 min read

Are electronic signatures legal in the US? ESIGN, UETA and the exceptionsYes. The federal ESIGN Act (2000) and the Uniform Electronic Transactions Act, adopted in 49 states and the District of Columbia (New York has its own similar statute), say a signature or contract cannot be denied legal effect just because it is electronic. Wills, family-law matters, most of the Uniform Commercial Code, court documents and certain consumer notices are carved out, and notarised or recorded documents still follow notary and county-recorder rules.11 min read

Are electronic signatures legal in Canada? PIPEDA, provincial acts and exceptionsYes. Every province and territory has an electronic commerce or electronic transactions act, and federal PIPEDA Part 2 covers federal laws, so an electronic signature generally satisfies a legal signature requirement. The main exclusions are wills, powers of attorney for property or personal care and negotiable instruments, plus land-transfer documents in several provinces. British Columbia has allowed electronic wills since December 2021.10 min read

Are electronic signatures legal in Brazil? ICP-Brasil, gov.br and Lei 14.063Yes. Medida Provisória 2.200-2/2001 gives documents signed with an ICP-Brasil certificate a presumption of authenticity and also lets parties use other electronic signatures they accept. Lei 14.063/2020 classifies signatures as simple, advanced or qualified and says which are needed when dealing with public bodies. Real-estate transfers and many registry acts still require a qualified ICP-Brasil signature or a notary.10 min read

Are electronic signatures legal in Mexico? Código de Comercio, NOM-151 and e.firmaYes. Mexico's Código de Comercio has recognised data messages and electronic signatures since reforms in 2000 and 2003, and gives an advanced or reliable electronic signature the same effect as a handwritten one. The SAT e.firma is an advanced signature used for tax and government matters and increasingly for contracts. Acts that the law requires to be in a public deed, such as most real-estate transfers, still go through a notary.10 min read

Are electronic signatures legal in Australia? ETA, deeds and company executionYes. The Electronic Transactions Act 1999 (Cth) and matching state and territory acts let an electronic signature satisfy a legal signature requirement if the method identifies the signer, shows their intention, is appropriately reliable and the recipient consents. Companies can permanently sign documents, including deeds, electronically under section 127 of the Corporations Act. Deeds signed by individuals, witnessing and wills depend on the state or territory.10 min read

Are electronic signatures legal in India? IT Act, Aadhaar eSign and DSC explainedYes. Under the Information Technology Act, 2000, an electronic record authenticated with a digital signature (DSC) or an approved electronic signature such as Aadhaar eSign satisfies a legal requirement for a signature. Wills, trusts and most individual powers of attorney and negotiable instruments are still excluded, and property documents still have to go through stamping and registration.12 min read

Are electronic signatures legal in Bangladesh? The ICT Act 2006 and digital signaturesYes. The Information and Communication Technology Act, 2006 says that where a law requires a signature, a digital signature affixed in the prescribed manner satisfies it, and since the Evidence (Amendment) Act, 2022 courts can admit digital records and presume the integrity of secure digital signatures. Deeds, powers of attorney and other documents that must be stamped, attested or registered still follow those paper procedures.10 min read

Are electronic signatures legal in Pakistan? The Electronic Transactions Ordinance 2002Yes. Under the Electronic Transactions Ordinance, 2002, any legal requirement for a signature is satisfied by an electronic signature or an advanced electronic signature, and advanced electronic signatures are presumed genuine in court. The Ordinance does not apply to negotiable instruments, powers of attorney, trusts, wills, or contracts for the sale or conveyance of immovable property.8 min read

Are electronic signatures legal in the UAE? Decree-Law 46 of 2021, UAE Pass and DIFC/ADGMYes. Under Federal Decree-Law No. 46 of 2021 on Electronic Transactions and Trust Services, a contract does not lose its validity or enforceability just because it is electronic, and any form of electronic signature may be used unless another law says otherwise. A qualified electronic signature, issued through a provider approved by the TDRA, has the same legal effect as a handwritten signature. The DIFC and ADGM free zones have their own laws that still exclude some documents, such as powers of attorney and wills (and, in the ADGM, long property leases and documents to be notarised).11 min read

Are electronic signatures legal in Saudi Arabia? Electronic Transactions Law, Nafath and NajizYes. The Saudi Electronic Transactions Law (Royal Decree No. M/18 of 1428H, 2007) says that where a signature is required, an electronic signature made in line with the law satisfies it, and electronic records can be used as evidence. The law excludes personal status transactions and the issuing of real estate deeds unless the responsible authority allows them electronically, which the Ministry of Justice now does through its Najiz platform. Most government and regulated processes use their own systems with Nafath login.9 min read

Are electronic signatures legal in South Africa? The ECT Act, advanced signatures and propertyYes. The Electronic Communications and Transactions Act 25 of 2002 recognises electronic signatures. Where the parties require a signature, any method that identifies the signer and shows approval can do. Where a law requires a signature, only an advanced electronic signature from an accredited provider counts. The Act excludes agreements to sell land, long leases of land, wills and bills of exchange, so a sale agreement for a house must still be signed in ink.10 min read

Are electronic signatures legal in Nigeria? Evidence Act, Cybercrimes Act and what to sign in inkYes. Section 93 of the Evidence Act 2011 says that where a rule of evidence requires a signature, an electronic signature satisfies it (a 2023 amendment added digital signatures), and section 17 of the Cybercrimes (Prohibition, Prevention, etc.) Act 2015 makes electronic signatures binding for purchases and other transactions. The Cybercrimes Act excludes wills, birth and death certificates, family law matters, court documents, utility cancellations and some safety notices. Deeds that must be sealed, such as land documents, are usually still signed on paper.10 min read

Are electronic signatures legal in Turkey? Law 5070, güvenli e-imza and mobil imzaYes. Under Electronic Signature Law No. 5070 (2004), a secure electronic signature (güvenli elektronik imza), based on a qualified certificate from a provider operating under the BTK, has the same legal effect as a handwritten signature. It cannot be used for transactions that the law subjects to official form or a special ceremony, such as property sales at the land registry, or for guarantee agreements, apart from bank letters of guarantee and insurers' surety bonds. Simple e-signatures are valid for contracts with no form requirement, but they carry less weight as evidence.9 min read

Are electronic signatures legal in Japan? E-signatures vs hanko explainedYes. Japanese contract law generally needs no particular form, so most contracts can be signed electronically, and the Act on Electronic Signatures and Certification Business (Act No. 102 of 2000) gives a qualifying electronic signature by the person themselves the same presumption of authenticity that a personal seal or handwritten signature gets on paper. Cloud 'witness-type' services can also qualify for that presumption if they meet conditions the government set out in 2020. A few acts still need a notary, a special procedure or handwriting, most notably wills.11 min read

Are electronic signatures legal in Singapore? ETA and Singpass explainedYes. Under section 8 of the Electronic Transactions Act 2010, an electronic signature satisfies a legal requirement for a signature if it identifies the signer, shows their intention and is reliable enough for the purpose. A 'secure electronic signature', such as one made with Sign with Singpass, also gets a legal presumption that it is genuine. Wills, most trusts and powers of attorney, negotiable instruments and property sale contracts and conveyances are excluded, except where newer laws create specific electronic routes.10 min read

Are electronic signatures legal in the Philippines? E-Commerce Act and e-notarizationYes. The Electronic Commerce Act of 2000 (Republic Act No. 8792) makes an electronic signature the equivalent of a handwritten one when it is reliable and properly linked to the signer, and the Supreme Court's Rules on Electronic Evidence let courts admit electronically signed documents once authenticated. Documents that must be public instruments, such as deeds of sale of land, still need notarization, which since 2025 can be done electronically before an accredited electronic notary. Wills still follow the Civil Code's formal rules.9 min read

Are electronic signatures legal in Indonesia? UU ITE, PSrE and e-MeteraiYes. Under the Electronic Information and Transactions Law (Law No. 11 of 2008, amended in 2016 and 2024), an electronic signature has legal force if it meets the conditions in Article 11. Government Regulation 71 of 2019 splits signatures into certified ones, made with a certificate from an Indonesian PSrE, and uncertified ones; both are valid, but certified signatures are much stronger evidence and the 2024 amendment requires them for high-risk transactions. Notarial deeds and land deeds made by a PPAT still need the official in person.10 min read

Can you sign a will electronically? A country-by-country guideIn most countries, no. Wills are the most common exclusion from electronic signature laws, so a will usually has to be signed on paper in front of witnesses, or written entirely by hand. The main exceptions are a group of US states with electronic wills statutes, British Columbia in Canada, and Victoria in Australia, and each of them has its own witnessing steps. England and Wales do not allow electronic wills yet, although the Law Commission recommended them in 2025.13 min read

Can you e-sign a lease or rental agreement? Country guideUsually yes. In the US, Canada, England and Wales, France, Spain, Brazil and most other countries, an ordinary residential tenancy can be signed electronically. Problems start with long leases, which may need a deed, registration or a stronger signature, and with countries that require official registration or stamp duty. Examples are India's Registration Act, Singapore's Electronic Transactions Act exclusion, Dubai's Ejari and Saudi Arabia's Ejar.12 min read

Can an employment contract be signed electronically?In most countries, yes. Offer letters and employment contracts can be signed with an ordinary electronic signature in the US, UK, Canada, Australia, India, Brazil, Singapore, South Africa and much of the EU. The main exceptions are specific documents. In Germany, terminations must be on paper and fixed-term clauses need wet ink or a qualified e-signature. In Italy, resignations go through the ministry's online system. In the UAE and Saudi Arabia, the contract must also be recorded on the government platform.12 min read

Can you e-sign a property deed or sale contract? A country-by-country guideUsually the purchase agreement can be e-signed, but the deed that actually transfers ownership often cannot be signed on an ordinary e-signature platform. In most civil-law countries (Germany, France, Spain, Italy, Brazil) the transfer goes through a notary, and in many common-law countries it goes through a land registry with its own witnessing, identity and lodgement rules. A few countries, including South Africa and Singapore, still exclude even the sale agreement from their general e-signature law.14 min read

Digital vs electronic signature: which does the law require?An electronic signature is any electronic sign of agreement, such as a typed name, a drawn signature or a click. A digital signature is a specific technology: a cryptographic signature tied to a certificate from a certificate authority. Most laws accept a simple electronic signature for ordinary contracts, but some countries (for example India, Bangladesh and Turkey) give full legal effect mainly to certificate-based signatures, and tiered systems such as the EU's reserve handwritten-equivalent status for qualified signatures.10 min read

Is an e-signature from an online platform legally binding?Yes, in most countries a signature collected through an online signing platform is legally binding for ordinary contracts, because e-signature laws say a signature cannot be refused just for being electronic. What decides a dispute is evidence: that the signer intended to sign, consented to signing electronically, can be linked to the signature, and that the document has not changed since. It is not enough where the law requires a notary, witnesses, a qualified signature or excludes the document.9 min read

How do you get a digital signature certificate in your country?You get a digital signature certificate from a certificate authority your country recognises, after an identity check. It comes either as a file (.pfx or .p12) you can install and back up, or locked to a smart card, USB token, phone app or remote signing service. Only exportable .pfx or .p12 files can be used on a website such as KovaPDF; token, card and cloud certificates are used through the issuer's own software.10 min read

Are electronic signatures legal in my country? The laws, country by country, in one tableIn every country on this page, yes: a contract does not fail just because it was signed electronically. What differs is which kind of signature a law demands for which document, and the short list of documents, usually wills, land and anything that needs a notary, that still have to be signed on paper.11 min read

All of these in one table: e-signature laws by country.

Verifying signed PDFs24

How to check a signed file you were sent, country by country and platform by platform.

How to check if a signed PDF was changed after it was signedIf the PDF carries a digital signature, a signature checker can tell you for certain whether the signed content changed: it recalculates the document's fingerprint and compares it with the one locked inside the signature. If the PDF only shows a picture of a signature, no tool can prove anything either way. You have to confirm the contents with the sender.7 min read

Why Adobe says “Signature validity is unknown”, and how to fix it“Signature validity is unknown” almost always means Adobe could confirm the document has not changed, but could not confirm who signed it, because the signer's certificate does not lead to an authority on Adobe's trust list. It is a question about the signer's identity, not proof of tampering, and the fix is to establish trust in the issuer deliberately, not to click anything that makes the warning go away.7 min read

Signature is valid but the document was modified: what does it mean?It means the version that was signed is still intact, but something was added to the file afterwards. PDFs are built so new content can be appended without touching the signed bytes, which is how several people can sign one document. Whether the addition is harmless (a later signature, a filled-in form field) or a problem (a changed page, a new text box) depends on what it was, so you need to look at the list of changes.6 min read

How to spot a fake signed PDF: pasted signature images, forged certificates and other red flagsRun the file through a signature checker first: if it finds no digital signature, the signature you see is only an image and proves nothing about who signed or whether the document changed. If there is a digital signature, check three things. That it is intact, that nothing unexpected was added after it, and that the certificate was issued by an authority you would expect for that sender, not a self-signed or unknown one.6 min read

How to verify a DocuSign or Adobe Acrobat Sign documentCheck the completed PDF itself for the platform's digital signature: when it is intact, the document has not changed since the service sealed it. Then read the certificate of completion (DocuSign) or audit report (Acrobat Sign) for who signed, when and how they were authenticated. Remember the handwritten-looking signatures inside are pictures. The proof is the platform's seal plus its record.6 min read

Signed PDF certificate expired: is the old signature still valid?An expired certificate warning does not by itself show that an old PDF signature is invalid. Check whether the signature existed while the certificate was valid, whether the signed bytes match, and what revocation and trust evidence supports that time. Without enough evidence, the honest result may remain unknown.3 min read

PDF signature errors explained: invalid, revoked, untrusted, self-signed and incomplete chainOnly two results mean something is actually wrong with a signed document: “invalid” (the signed content changed, or the signature is damaged) and “revoked” (the certificate was cancelled, usually because it was compromised). “Not trusted”, “unknown”, “self-signed”, “revocation not checked” and “no timestamp” are about how much you can rely on the signer's identity or time. Questions to consider, not proof of forgery.7 min read

How banks, HR teams and landlords can check a signed PDF before accepting itCheck every signed PDF in the same four steps: confirm whether it has a digital signature or only a picture of one; if digital, confirm it is intact and nothing was added after signing; check who issued the signer's certificate; then confirm the contents with the issuing organisation through a channel you found yourself. Save a verification report with the file so the check can be shown later.5 min read

My signed file is .p7m, .p7s, .imz or .xml, not PDF: how do I verify it?Those files use a different kind of digital signature. A signed PDF (PAdES) keeps the signature inside the PDF. A .p7m or .imz file (CAdES) wraps the document inside the signature, a .p7s is a separate signature file for a document you also need, and signed XML (XAdES) puts the signature in the XML. Each needs a validator that understands that format; a PDF signature checker can only check the first kind.5 min read

How to verify a government certificate or university degree PDFVerify two things. First the file: if it carries a digital signature, check it is intact, that nothing was added after signing, and that the certificate belongs to the issuing institution. Second the record: use the issuer's own verification service (a QR code, reference number or online register) reached through an address you found yourself. The file check proves the PDF is unaltered; only the issuer can confirm the record still stands.5 min read

How to verify a signed e-invoice (India, Saudi Arabia, Mexico, EU and more)In most e-invoicing systems the legally relevant invoice is structured data (usually XML or JSON), registered or signed by the tax authority's system, and the PDF is only a readable copy. So verify the invoice where the system says: scan the QR code with the tax authority's official app, or look up its unique ID on the authority's portal. A PDF signature check only tells you whether that PDF copy was altered.6 min read

How to verify a digital signature in the EU: qualified vs advanced (eIDAS), with France, Germany, Italy, Spain and PolandChecking an EU signature is two questions. Is it intact and made with a valid certificate? Any good checker answers that. Is it qualified? That depends on whether the certificate was issued as a qualified certificate by a qualified trust service provider on the EU Trusted Lists, created with a qualified device, which only a validator that consults those lists can determine. A qualified signature has the legal effect of a handwritten one across the EU.7 min read

How to verify an ICP-Brasil or gov.br signature on a PDFUse the official ITI validator for the legal answer: it checks ICP-Brasil (qualified) signatures and gov.br (advanced) signatures and reports each as approved (aprovado), failed (reprovado) or indeterminate (indeterminado). Check integrity and what changed after signing with a PDF signature checker as well. An ICP-Brasil signature may show as “not trusted” in general-purpose tools because the Brazilian root is not on every trust list. That alone does not make it invalid.5 min read

How to verify a DSC-signed PDF in India (GST, MCA, income-tax documents and e-Aadhaar)Indian DSCs chain up to the Root Certifying Authority of India run by the Controller of Certifying Authorities (CCA). Many computers do not trust that root by default, so Adobe often shows “validity unknown” even when the signature is intact. Check that the signature is valid and nothing changed after signing, confirm the certificate chains to a licensed Indian CA and the CCA root, and only then add the root to your trusted certificates.6 min read

How to verify a digitally signed PDF in the UKUK law accepts electronic signatures of many kinds, so most signed PDFs you receive will not be “qualified”, and do not need to be. Verify the file (is there a digital signature, is it intact, was anything added after signing, who issued the certificate), then verify the context: who sent it, through what platform, and whether the kind of document has special formalities such as a witnessed deed.5 min read

How to verify a digitally signed PDF in the United StatesIn the US, electronic signatures are broadly valid under the federal ESIGN Act and state law, and there is no single national signature authority, so verification is about evidence, not a legal label. Check whether the PDF carries a digital signature or seal, whether it is intact and unchanged since signing, who issued the certificate, and the e-signature platform's audit trail if one was used.4 min read

How to verify a UAE PASS or digitally signed document in the UAEFor a document signed through UAE PASS, use the UAE PASS verification feature for the official answer, and check the PDF itself for integrity and changes after signing. For other UAE digital signatures, confirm the signing certificate comes from a trust service provider licensed by the TDRA. A “not trusted” result in general-purpose tools often reflects their trust list, not the signature.5 min read

How to verify a digitally signed document in Saudi ArabiaCheck the PDF for a digital signature, confirm it is intact and nothing was added after signing, and confirm the certificate chains to a certification service provider licensed under the Saudi national PKI. For government documents, use the issuing platform's own verification (usually a QR code or document number); for e-invoices, use ZATCA's official VAT app. A “not trusted” result elsewhere often reflects the tool's trust list, not the signature.5 min read

How to verify an e-imza signed document in Turkey (PDF, .imz and e-Devlet barcodes)It depends on the form. A PAdES-signed PDF can be checked with any PDF signature checker for integrity and changes, and the certificate should chain to a certification provider authorised in Turkey. An .imz file is a CAdES container that needs a Turkish e-imza application such as Kamu SM's İmzager. A document from e-Devlet with a barcode is verified with e-Devlet's barcoded-document verification service (Barkodlu Belge Doğrulama).5 min read

How to verify a certified electronic signature (TTE) on a PDF in IndonesiaIndonesian law distinguishes certified electronic signatures (made with a certificate from a PSrE recognised by the government) from uncertified ones. To check a certified signature, use the government's official PDF verification service for electronic signatures, and check integrity and changes after signing with a PDF signature checker. Government documents signed through BSrE are checked the same way.4 min read

How to verify a PNPKI digitally signed PDF in the PhilippinesPNPKI certificates are issued under the Philippine National Public Key Infrastructure run by the DICT and chain to the Philippine Root CA, which Adobe does not include by default, so signatures often show as having problems even when they are intact. Check that the signature is valid and nothing changed after signing, confirm the chain ends at the genuine Philippine root, and only then add that root to your trusted certificates.4 min read

How to verify an e.firma-signed document or CFDI in MexicoMost documents signed with e.firma in Mexico are not signed PDFs: the SAT's own documents carry a digital seal, an original string and a QR code, and invoices (CFDI) are XML files certified with a folio fiscal. Verify SAT documents by scanning their QR code and checking the address is the SAT's, verify a CFDI with the SAT's CFDI verification service, and check a genuinely signed PDF with a PDF signature checker.5 min read

How to verify a digitally signed PDF in BangladeshDigital signatures in Bangladesh are issued by Certifying Authorities licensed by the Office of the Controller of Certifying Authorities (CCA), and their certificates chain to the Bangladesh Root CA. Check that the signature is intact and nothing changed after signing, confirm the chain reaches the Bangladesh Root CA through a licensed CA, and, because many official documents use a QR code or online lookup rather than a digital signature. Confirm the record with the issuing office as well.5 min read

How to verify a digitally signed PDF in PakistanUnder Pakistan's Electronic Transactions Ordinance, 2002, advanced electronic signatures carry stronger legal presumptions, and the clearest route to one is a certificate from a certification service provider accredited by the Electronic Certification Accreditation Council (ECAC). Check that the PDF's signature is intact and nothing changed after signing, see who issued the certificate and whether that provider is accredited, and for official documents confirm the record with the issuing body.5 min read

Photos for forms12

Photo and signature sizes for exam, admission and job portals, and how to meet them exactly.

What photo and signature size does each exam or job portal ask for? Bangladesh and India, in one tableEvery portal sets two rules for each file, a size in pixels and a size in KB, and some add a minimum. The table gives the figures each one asks for and where the figure was read; Resize Image makes a photo or signature that passes both rules and shows the exact size before you download.6 min read

How do I make my photo 300×300 pixels and under 100 KB for a Teletalk job application?The photo must be exactly 300 × 300 pixels, a JPG, and less than 100 KB. In Resize Image, pick your photo, type 300 in Width and 300 in Height and 100 in the File size box, check that every line in the list has a tick, and download.6 min read

How do I make my signature 300×80 and under 60 KB, with a clean white background?Sign on plain white paper, photograph it from above in good light, then in Resize Image choose Signature, type 300 in Width, 80 in Height and 60 in the File size box. It whitens the paper, darkens the ink, trims to the signature and saves a 300 × 80 pixel JPG under 60 KB.6 min read

What are the BCS application photo and signature rules, and why does an upload get rejected?For the 49th BCS, the photo was 300 × 300 pixels up to 100 KB and the signature 300 × 80 pixels up to 60 KB, both JPG. Common reasons an upload is refused: the wrong pixels, a file over the limit by the form's count, a file that is not a real JPG, or a photo that arrives sideways.5 min read

How do I make a Dhaka University admission photo 460 to 480 × 600 to 620 pixels and 30 to 200 KB?For 2025-26 the photo was reported as 460 to 480 pixels wide, 600 to 620 pixels tall and 30 to 200 KB, as a JPG. In Resize Image, type 465 in Width and 620 in Height (any size inside the ranges passes), 200 in the File size box and 30 in Smallest size under More options; check your year's notice first, as the size changes.5 min read

What photo does the GST (গুচ্ছ) admission form need: white background, face size and the 100 KB limit?Take a colour photo against a white background with your face filling about two-thirds of the height, then resize it to 300 × 300 pixels as a JPG no bigger than 100 KB. In Resize Image, type 300 in Width and 300 in Height and 100 in the File size box for the resizing; Background set to White can make a plain, light background white, but the face size and dress are up to the photo you take.5 min read

How do I reduce a photo to 20 KB for a form without making it blurry?Make the photo smaller in pixels first, then choose the quality. A phone photo cannot reach 20 KB at its full size even at the lowest quality, so a clear result comes from fewer pixels at decent quality, not from a full-size photo crushed until it smears. Resize Image does both steps and shows the exact size before you download.6 min read

Why is my signature 'too small' for a 10 KB to 20 KB limit, and how do I fix it?A small, clean signature holds very little information, so at 140 × 60 pixels it comes to about 3 KB even at the best quality, well under a 10 KB minimum. Choose Signature in Resize Image so the paper is made white, then let it add blank data inside the JPG to reach the minimum. The picture does not change, and the tool tells you when it has done this.6 min read

What size should the IBPS and SBI photo, signature, thumb impression and handwritten declaration be?Photo 200 × 230 pixels, 20 to 50 KB; signature 140 × 60 pixels, 10 to 20 KB; left thumb impression 240 × 240 pixels, 20 to 50 KB; handwritten declaration 800 × 400 pixels, 50 to 100 KB; all JPG. These come from the SBI guidelines for scanning and uploading documents; in Resize Image you type each file's numbers and make them one at a time.6 min read

Why is my '20 KB' file still rejected? KB vs KiB explainedSome systems count a kilobyte as 1,000 bytes and others as 1,024, so the same file can be 19.9 KB on your computer and 20.4 KB to the portal. Go by the exact byte count: for a 10 to 20 KB rule, a file of 10,240 to 20,000 bytes passes both ways of counting. Resize Image aims inside that range and shows the exact bytes.5 min read

Why does my photo upload sideways, and how do I fix it?Your phone often stores the photo on its side and adds a small note saying which way to turn it. Your gallery reads the note; some upload forms do not, so they show the picture on its side. Resize Image applies the note, saves the pixels the right way up, and leaves the note out, so the photo looks the same everywhere.4 min read

Photo 50 KB kaise kare? How to make any phone photo 50 KB for an online formOpen Resize Image to 50 KB, add the photo and download when every check passes. The tool makes the photo smaller in pixels first and then picks the quality, so a 3 MB phone photo becomes a clear photo under 50 KB. If your form also gives a pixel size or a minimum such as 20 KB, type the pixels in Width and Height and the minimum in Smallest size under More options.5 min read

Every size in one place: photo and signature rules by exam and portal. For one exam at a time, with a resizer set to the right size: exam photo and signature sizes.

PDFの使い方

WordをPDFに変換する方法とレイアウトの確認完成したWord文書をPDFに変換し、ダウンロードしたファイルを開いて確認します。表の右端、改ページの前後、日本語の文字、押印や署名のための余白を見てください。次の修正に備えて、編集用のDOCXも残します。読了目安：3分

PDFをWordに変換して編集する方法PDFをDOCXに変換し、編集する前に文章の順番と内容を原本に照らして確認します。スキャンしたページは文字認識が必要になる場合があります。見た目が似ていても、段落や表の構造が正しく戻ったとは限りません。読了目安：3分

写真やJPGをまとめてPDFにする方法写真やJPGを追加し、読む順番とページの向きを整えて一つのPDFを保存します。書類の四辺と小さな文字が欠けずに見えることを確認してください。写真をPDFにしても、ぼけた文字が鮮明になったり、自動的に検索できるようになったりするわけではありません。読了目安：3分

PDFのページをJPG・PNG画像に変換する方法必要なPDFページをJPGまたはPNGに変換し、保存した画像を開いて確認します。ページ全体の画像と、PDFの中に入っている元の写真は別物です。使う大きさで文字や細い線が読めるかを確かめてください。読了目安：3分

PDFを分割して必要なページだけ取り出す方法必要なページの位置を選び、新しいPDFとして保存します。紙面に印字された番号と、ファイル内のページ順は一致しない場合があります。保存したコピーの先頭、末尾、内容のつながりを元のPDFと照合してください。読了目安：3分

PDFの不要なページを削除する方法削除するページをプレビューで選び、残りを新しいPDFとして保存します。印字された番号ではなく、内容とファイル内の位置で選択を確かめてください。ダウンロード後は枚数だけでなく、削除した箇所の前後も読み直します。読了目安：3分

PDFのページを回転して正しい向きで保存する方法向きが違うページを選んで回転し、新しいPDFとして保存します。閲覧ソフトの画面を回しただけでは、送るファイルの向きが変わらない場合があります。ダウンロードしたコピーを開き直し、変更したページと変更しないページの両方を確認してください。読了目安：3分

PDFにページ番号・ヘッダー・フッターを付ける方法番号を付ける範囲と開始番号を決め、ページ内の位置を選びます。文書名などのヘッダーやフッターが必要なら、それぞれの文字も追加します。保存したPDFの先頭、末尾、サイズや向きの違うページで、本文と重なっていないかを確認してください。読了目安：3分

PDFを開くときのパスワードを設定する方法PDFを開くためのパスワードを設定し、保存したファイルを閉じてから開き直して試します。印刷やコピーを制限する設定とは区別してください。相手に見せない情報は、パスワードだけに頼らず配布用の内容から外します。読了目安：3分

分かっているPDFのパスワードを解除する方法パスワードを知っていて変更する権限があるPDFなら、開封用の設定を外したコピーを作ります。保存した結果を閉じて開き直し、入力なしで開けるかを確認してください。分からないパスワードを見つける操作とは別です。読了目安：3分

ExcelとPDFの変換で表と数値を確認する方法ExcelをPDFにするときは、印刷範囲と横に長い表の分かれ方を確認します。PDFをExcelにするときは、行と列の対応や数値の種類を原本と照合します。同じ合計が表示されても、元の計算式が復元された証拠にはなりません。読了目安：3分

PDFの文字を編集して誤字を直す方法文字を含むPDFを編集画面で開き、短い訂正をして新しいコピーを保存します。スキャン画像では先に文字認識が必要になる場合があります。白い四角や新しい文字で覆うだけでは、古い情報がファイルから消えたとは確認できません。読了目安：3分

PDFを指定した容量以下に圧縮する方法提出先の上限に合う目標容量を選び、圧縮後の実際のサイズを確認します。小さな文字、押印部分、数字が読めることも必要です。目標に達しなかった場合は、画像の元データや添付内容を見直してから提出用のコピーを決めます。読了目安：3分

複数のPDFを正しい順番で結合する方法必要なPDFを追加し、読む順番を整えて一つのファイルを保存します。資料の切り替わりと重複ページを、ダウンロードしたコピーで確認してください。電子署名付きの元ファイルは、結合した閲覧用コピーとは別に残します。読了目安：3分

スキャンPDFをOCRで検索できるようにする方法OCRでスキャン画像の文字を認識すると、単語の検索やテキストの取り出しに使えます。文書の言語を選び、認識結果を元の画像と照合してください。氏名、番号、金額は、文章が自然に読める場合でも個別に確認する必要があります。読了目安：3分

PDFを印刷せずに署名して保存する方法完成したPDFへ見える署名を追加し、保存した結果で位置を確認します。相手が特定の署名方法を求めている場合は、作業前に条件を確かめてください。手書きの線や署名画像だけで、証明書を使う検証可能な署名になったとは判断できません。読了目安：3分

入力できるPDFフォームの作成と保存を確認する方法入力できるPDFには、質問に合う種類のフォーム欄を使います。架空の回答で試し、保存したPDFを閉じて開き直してください。紙面の線や上に置いた固定の文字だけでは、値を保存する入力欄になりません。読了目安：3分

スマートフォンで書類をスキャンしてPDFにする方法書類を平らに置き、均一な光で撮影して四隅を確認し、PDFとして保存します。ダウンロードしたコピーで小さな文字とページ順を見直してください。紙の形を整えても、ぼけた線は戻らず、文字の検索には別の認識処理が必要になる場合があります。読了目安：3分

PowerPointとPDFを変換してスライドを確認する方法閲覧用にはプレゼンテーションをPDFに変換し、各スライドを保存した結果で確認します。PDFから編集用のスライドを作る場合は、復元された文字や図形を別に点検してください。アニメーション、発表者ノート、グラフの元データが自動で戻るわけではありません。読了目安：3分

PDFに透かしを入れて読みやすさを確認する方法短い透かしを追加し、本文が読める位置、大きさ、濃さに整えます。保存したコピーで、異なる構成のページを確認してください。透かしはコピーの状態を示すもので、情報を消したり、再利用を確実に防いだりするものではありません。読了目安：3分

PDFの個人情報を墨消しで完全に削除する方法墨消しでは、選んだ情報を内容から取り除く必要があります。黒い四角を置くだけで終わらせず、保存したPDFで検索や別の出現箇所を確認してください。コメント、入力欄、メタデータも、使った削除処理の範囲に応じて見直します。読了目安：3分

PDFをPDF/Aへ変換して適合性を検証する方法必要なPDF/Aプロファイルを選び、同じプロファイルに対する検証結果を確認します。出力の内容と表示も、元のPDFに照らして見てください。形式に適合しても、記載された数値の正しさや、あらゆる提出先での受理が証明されるわけではありません。読了目安：3分

PDFを印刷・コピーできないときの確認方法PDFは開くのに印刷やコピーができない場合、表示されたメッセージと文書の権限を確認します。分からない開封用パスワードや、画像だけのページは別の問題です。利用を許されたコピーだけを処理し、必要な操作を出力でもう一度試してください。読了目安：3分

PDFのページを並べ替えて正しい順番で保存する方法ページの内容を見分け、必要な順番に移して新しいPDFを保存します。ダウンロードしたコピーで、ページのつながりを読み直してください。紙面の番号、目次、参照先は、新しい位置へ自動で更新されない場合があります。読了目安：3分

電子署名の法的効力は？電子署名法と契約の確認点電子署名法の要件を満たす本人の電子署名がある電子文書には、真正に成立したものと推定する規定があります。ただし、署名が付いているだけで契約内容や代理権まで正しくなるわけではありません。相手方の本人確認、対象の文書、必要な手続を分けて確認します。読了目安：3分

電子署名付きPDFを受け取ったら何を確認する？最初に受領した元のPDFを保存し、署名者、署名対象の内容、署名後の変更を確認します。証明書が信頼できるかという結果は、内容が改変されていないかという結果とは別です。確認できない項目が残ったら、問題なしと扱わず提出元に確認します。読了目安：3分

印影画像と電子署名はどう違う？印影画像はページに見える画像で、電子署名の検証情報を持つとは限りません。電子署名の検証では、対象の文書と署名データの関係を調べます。見た目だけで契約の効力や本人性を決めず、必要な方式と証拠を確認してください。読了目安：3分

PDF işlemleri için rehberler

Word dosyasını düzeni bozulmadan PDF yapmaWord belgesini PDF’ye çevirin ve indirdiğiniz dosyayı açarak sayfa düzenini kontrol edin. Özellikle tabloları, Türkçe karakterleri ve son sayfadaki imza alanını inceleyin. Sonraki değişiklikler için Word dosyasını ayrıca saklayın.3 dakikalık okuma

PDF’yi Word’e çevirip metni düzenlemePDF’yi Word’e dönüştürün, çıkan DOCX dosyasını açın ve metin akışını aslıyla karşılaştırın. Sayfa bir tarama ise metin tanıma gerekebilir. Aynı görünümün korunması, bütün paragrafların ve tabloların doğru kurulduğunu tek başına göstermez.3 dakikalık okuma

JPG fotoğraflarını tek PDF dosyası yapmaJPG fotoğraflarını PDF’ye ekleyin, sıralarını ve yönlerini düzeltin, ardından tek PDF indirin. Her görüntünün sayfaya nasıl yerleştiğini kontrol edin. Fotoğrafı PDF yapmak, bulanık yazıyı düzeltmez veya belgeyi kendiliğinden aranabilir hâle getirmez.3 dakikalık okuma

PDF sayfalarını JPG veya PNG olarak kaydetmePDF sayfalarını görüntüye aktarın ve çıkan JPG veya PNG dosyalarını açarak kontrol edin. Sayfanın tamamını görüntü yapmak, içindeki özgün fotoğrafı çıkarmaktan farklıdır. Yazı içeren sayfalarda küçük harfleri ve ince çizgileri büyüterek inceleyin.3 dakikalık okuma

PDF bölme ve belirli sayfaları ayırmaPDF’de ayırmak istediğiniz sayfa konumlarını seçin ve yeni bir dosya oluşturun. Basılı sayfa numarası ile dosyadaki sıra aynı olmayabilir. İndirilen kopyada ilk sayfayı, son sayfayı ve toplam sayfa sayısını kontrol edin.3 dakikalık okuma

PDF dosyasından istenmeyen sayfaları silmeSilinecek sayfaları önizlemede seçin ve kalan sayfalardan yeni bir PDF kaydedin. Dosya sırasını basılı sayfa numaralarıyla karıştırmayın. Son kopyada hem sayfa sayısını hem silinen sayfaların öncesi ve sonrasını kontrol edin.3 dakikalık okuma

PDF sayfasını döndürüp doğru yönde kaydetmeYan duran sayfaları seçip gerekli açıyla döndürün ve yeni PDF’yi kaydedin. Görüntüleyicinin ekranını döndürmek, indirilen dosyayı değiştirmeyebilir. Yeni kopyayı yeniden açıp hem düzeltilen hem değişmemesi gereken sayfalara bakın.3 dakikalık okuma

PDF’ye sayfa numarası ve üstbilgi eklemeSayfa numaraları için başlangıç değerini ve yerleşimi seçin; üstbilgi veya altbilgi gerekiyorsa metni ayrıca ekleyin. Kapak ve ekler aynı numaralandırmaya girmeyebilir. İndirilen PDF’de ilk, son ve farklı ölçüdeki sayfaları kontrol edin.3 dakikalık okuma

PDF’ye açılış şifresi koymaPDF’yi açmak için bir parola belirleyin, korunan dosyayı indirin ve yeniden açarak parolanın istendiğini kontrol edin. Açılış parolası ile yazdırma veya kopyalama izinleri farklıdır. Alıcının görmemesi gereken bilgileri yalnızca parola arkasına koymak yerine paylaşılacak kopyadan kaldırın.3 dakikalık okuma

Bilinen PDF açılış şifresini kaldırmaParolasını bildiğiniz ve değiştirmeye yetkili olduğunuz PDF’yi açıp şifresiz bir kopya kaydedin. İndirilen yeni dosyayı kapatıp yeniden açarak artık parola istemediğini kontrol edin. Bu işlem bilinmeyen bir açılış parolasını bulmakla aynı değildir.3 dakikalık okuma

Excel ve PDF dönüşümünde tabloları kontrol etmeExcel’i PDF yaparken yazdırılacak alanı ve sütunların sayfalara nasıl bölündüğünü kontrol edin. PDF’yi Excel’e çevirirken hücre ilişkilerini ve sayı türlerini kaynağa bakarak doğrulayın. PDF’de görünen toplam, çalışma kitabındaki formülün geri geldiği anlamına gelmez.3 dakikalık okuma

PDF’de yazı düzenleme ve küçük hataları düzeltmePDF’deki gerçek metni düzenleyicide seçip düzeltin, ardından yeni kopyayı kaydedin. Taranmış sayfalarda önce metin tanıma gerekebilir. Bir yazının üstünü beyaz kutuyla kapatıp yeni metin koymak, eski içeriğin kaldırıldığını göstermez.3 dakikalık okuma

PDF’yi belirli bir boyut sınırına küçültmeYükleme alanının istediği üst sınıra göre hedef boyut seçin ve çıkan PDF’nin gerçek boyutunu kontrol edin. Küçük yazılar, kaşeler ve rakamlar okunabilir kalmalıdır. Hedefe ulaşılamadıysa dosyayı uygun kabul etmek yerine kaynak görüntüleri veya gerekli sayfaları yeniden değerlendirin.3 dakikalık okuma

Birden fazla PDF dosyasını tek dosyada birleştirmePDF’leri ekleyin, dosyaların ve sayfaların sırasını belirleyin, ardından birleşik kopyayı indirin. Sayfa sayısıyla birlikte belgeler arasındaki geçişleri ve tekrarları kontrol edin. İmzalı orijinalleri, birleştirilmiş çalışma dosyasından ayrı koruyun.3 dakikalık okuma

Taranmış PDF’de OCR ile metin aramaOCR, tarama görüntüsündeki yazıyı tanıyıp arama ve seçim için metin oluşturur. Belgenin dilini seçin ve tanınan metni görüntüyle karşılaştırın. Özellikle Türkçe harfler, isimler ve rakamlar kontrol edilmeden doğru kabul edilmemelidir.3 dakikalık okuma

PDF’yi yazdırmadan imzalama ve doğru kopyayı göndermePDF’nin son sürümüne görünen imzanızı ekleyin, kaydedin ve indirilen dosyada yerini kontrol edin. Alıcı belirli bir imza yöntemi istiyorsa önce o şartı netleştirin. Bir imza çizimi veya fotoğrafı, tek başına sertifikayla doğrulanabilir bir dijital imza değildir.3 dakikalık okuma

Doldurulabilir PDF formu oluşturma ve doldurmaDoldurulabilir bir PDF için uygun türde gerçek form alanları kullanın. Alanları kurmaca yanıtlarla deneyin, kaydedin ve indirilen dosyayı yeniden açın. Sayfaya çizilmiş bir çizgi veya üstüne yerleştirilmiş sabit metin, etkileşimli form alanıyla aynı değildir.3 dakikalık okuma

Telefonla belge tarayıp okunaklı PDF hazırlamaBelgeyi düz ve eşit aydınlatılmış bir zeminde çekin, dört köşesini kontrol edin ve PDF olarak kaydedin. İndirilen dosyada sayfa sırası ile küçük yazıları yeniden inceleyin. Perspektifi düzeltmek netlik eklemez; aranabilir metin için ayrıca OCR gerekebilir.3 dakikalık okuma

PowerPoint ve PDF dönüşümünde slaytları kontrol etmeSunumdan sabit bir okuma kopyası için PDF oluşturun ve her slaydı çıktı dosyasında kontrol edin. PDF’den sunum hazırlıyorsanız yeniden kurulan yazı ve şekilleri ayrıca inceleyin. Animasyon, konuşmacı notu ve grafiğin kaynak verisi bir PDF’den kendiliğinden geri gelmez.3 dakikalık okuma

PDF’ye metni kapatmadan filigran eklemeKısa bir filigran metni ekleyin ve bütün içerik okunacak biçimde konumunu, boyutunu ve saydamlığını ayarlayın. İndirilen dosyada farklı türdeki sayfaları kontrol edin. Filigran bir kopyayı işaretler, fakat bilgiyi kaldırmaz veya yeniden kullanımını güvenilir biçimde engellemez.3 dakikalık okuma

PDF’de kişisel veriyi kalıcı olarak karartmaKarartma, seçilen bilgiyi dosyanın içeriğinden kaldırmalıdır; üstüne siyah kutu çizmek yeterli değildir. İşlemden sonra indirilen kopyada arama yapın ve aynı verinin başka yerlerde kalıp kalmadığını kontrol edin. Yorumlar, form alanları ve metaveriler ayrıca değerlendirilmelidir.3 dakikalık okuma

PDF’yi PDF/A’ya dönüştürme ve sonucu doğrulamaİstenen PDF/A profilini seçip dönüşümü yapın ve aynı profile göre doğrulama sonucunu kontrol edin. Sayfaların görünümünü de kaynakla karşılaştırın. Uygunluk sonucu, metnin doğruluğunu veya her kurumun dosyayı kabul edeceğini kanıtlamaz.3 dakikalık okuma

PDF yazdırma ve kopyalama kısıtları nasıl anlaşılır?PDF açılıyor ama yazdırma veya kopyalama çalışmıyorsa önce tam hata mesajını ve belge izinlerini kontrol edin. Açılış parolası bilinmemesi ve sayfanın yalnızca görüntü olması farklı sorunlardır. Yalnızca kullanmaya yetkili olduğunuz kopyada işlem yapın ve ihtiyacınız olan eylemi sonuçta tekrar deneyin.3 dakikalık okuma

PDF sayfalarının sırasını değiştirip kaydetmeSayfaları küçük resimlerinden tanıyıp doğru sıraya taşıyın ve yeni PDF’yi kaydedin. İndirilen kopyada bütün geçişleri okuyun. Dosyadaki sıra değişince basılı numaralar ve içindekilerdeki referanslar kendiliğinden güncellenmeyebilir.3 dakikalık okuma

E-imza hukuken geçerli mi? 5070 sayılı Kanun5070 sayılı Kanun kapsamında güvenli elektronik imza, elle atılan imzayla aynı hukuki sonucu doğurur. Bu sonuç, PDF’ye eklenen her imza fotoğrafı için otomatik olarak geçerli değildir. İşlemin şekil şartını, imzalayanın yetkisini ve kullanılan imzanın niteliğini ayrı ayrı kontrol edin.3 dakikalık okuma

PDF’de e-imza doğrulama nasıl yapılır?Önce imzalanmış asıl PDF’yi saklayın, sonra dosyadaki imzaları doğrulayın. İmzalayanın kimliği, korunan içeriğin bütünlüğü ve sertifikaya güven ayrı sonuçlardır. Barkodlu belge veya ayrı imza dosyası aldıysanız, o belgenin kendi doğrulama yolunu da kullanmanız gerekir.3 dakikalık okuma

Taranmış imza ile güvenli e-imza arasındaki farkTaranmış imza sayfada görünen bir görüntüdür; güvenli e-imza ise belirli kimlik ve güvenlik koşullarına bağlıdır. Görüntüyü büyütmek, belgeye gömülü dijital imza bulunup bulunmadığını göstermez. Hangi yöntemin istendiğini ve doğrulama verilerinin korunup korunmadığını kontrol edin.3 dakikalık okuma

Panduan mengelola PDF

Mengubah Word ke PDF tanpa salah tata letakUbah dokumen Word yang sudah final menjadi PDF, lalu buka hasil unduhannya untuk memeriksa tata letak. Pastikan tabel, gambar, dan tempat tanda tangan tidak terpotong atau berpindah. Tetap simpan DOCX sebagai dokumen kerja untuk revisi berikutnya.Waktu baca 3 menit

Mengubah PDF ke Word agar teks bisa dieditUbah PDF menjadi DOCX, lalu cocokkan teks dan urutan bacanya dengan sumber. PDF hasil scan mungkin memerlukan OCR agar tulisannya dikenali. Kemiripan tampilan belum membuktikan bahwa paragraf dan sel tabel tersusun dengan benar.Waktu baca 3 menit

Membuat foto JPG menjadi satu berkas PDFMasukkan foto JPG, atur urutan serta arah halamannya, lalu simpan sebagai satu PDF. Pastikan seluruh tepi dokumen dan tulisan kecil tetap terlihat. Menggabungkan foto tidak memperbaiki gambar buram atau otomatis membuat tulisannya bisa dicari.Waktu baca 3 menit

Mengubah halaman PDF menjadi JPG atau PNGEkspor halaman PDF sebagai JPG atau PNG, lalu buka gambar hasil unduhan untuk memeriksa isinya. Gambar satu halaman berbeda dari foto asli yang tertanam di dalam PDF. Perhatikan tulisan kecil, garis tabel, dan bagian tepi pada ukuran yang benar-benar akan dipakai.Waktu baca 3 menit

Memisahkan PDF dan mengambil halaman tertentuPilih posisi halaman yang ingin diambil, lalu simpan menjadi PDF baru. Nomor yang tercetak di kertas bisa berbeda dari urutan halaman dalam berkas. Periksa halaman awal, halaman akhir, dan isi di antara keduanya pada hasil unduhan.Waktu baca 3 menit

Menghapus halaman PDF tanpa salah membuang isiTandai halaman yang akan dikeluarkan, lalu simpan PDF baru berisi halaman yang dipertahankan. Cocokkan pilihan dengan pratinjau karena nomor tercetak bisa berbeda dari posisi berkas. Buka hasil unduhan untuk memeriksa jumlah halaman dan kelanjutan isinya.Waktu baca 3 menit

Memutar halaman PDF lalu menyimpan arahnyaPilih halaman yang menyamping, putar ke arah baca yang benar, lalu unduh PDF baru. Memutar tampilan pada pembaca PDF belum tentu mengubah berkasnya. Buka kembali hasil unduhan untuk memastikan halaman yang dipilih berubah dan halaman lain tetap benar.Waktu baca 3 menit

Menambah nomor halaman dan header pada PDFTentukan awal penomoran dan letaknya, lalu tambahkan header atau footer bila memang dibutuhkan. Sampul dan lampiran tidak selalu mengikuti nomor yang sama. Periksa PDF unduhan pada halaman awal, akhir, serta halaman yang ukuran atau arahnya berbeda.Waktu baca 3 menit

Memberi password untuk membuka PDFPasang password pembuka, unduh PDF terlindungi, lalu tutup dan buka kembali untuk menguji permintaan password. Pembatasan cetak atau salin merupakan hal yang berbeda. Informasi yang tidak boleh dilihat penerima tetap perlu dikeluarkan dari salinan yang dibagikan.Waktu baca 3 menit

Menghapus password PDF yang sudah diketahuiGunakan password yang diketahui untuk membuat salinan PDF tanpa kunci pembuka, jika Anda berwenang mengubahnya. Tutup lalu buka hasil unduhan untuk memastikan password tidak lagi diminta. Proses ini berbeda dari mencari atau menebak password yang tidak diketahui.Waktu baca 3 menit

Konversi Excel dan PDF: periksa tabel serta angkaSaat mengubah Excel ke PDF, periksa area cetak dan pembagian kolom ke halaman. Saat mengubah PDF ke Excel, cocokkan hubungan sel serta jenis angkanya dengan sumber. Total yang tampak sama tidak membuktikan bahwa rumus perhitungan ikut pulih.Waktu baca 3 menit

Mengedit tulisan PDF dan memperbaiki teksPilih teks asli pada editor PDF, lakukan koreksi, lalu simpan sebagai salinan baru. Halaman hasil scan mungkin memerlukan pengenalan teks terlebih dahulu. Menutup tulisan dengan kotak putih tidak membuktikan bahwa isi lama sudah dikeluarkan dari berkas.Waktu baca 3 menit

Kompres PDF agar sesuai batas ukuran unggahanPilih target ukuran sesuai batas unggahan dan periksa ukuran berkas hasil kompresi. Tulisan kecil, cap, serta angka harus tetap terbaca. Jika target belum tercapai, tinjau sumber atau susunan lampiran sebelum menganggap berkas siap dikirim.Waktu baca 3 menit

Menggabungkan beberapa file PDF dengan urutan benarTambahkan PDF yang diperlukan, susun urutannya, lalu unduh satu berkas gabungan. Periksa isi pada setiap pergantian dokumen serta halaman yang mungkin berulang. Simpan sumber asli bertanda tangan secara terpisah dari salinan gabungan.Waktu baca 3 menit

OCR PDF scan agar teks bisa dicari dan diperiksaOCR mengenali tulisan pada gambar scan sehingga teks dapat dicari atau diambil. Pilih bahasa dokumen, lalu bandingkan hasil dengan gambar sumber. Nama, nomor, serta angka penting tetap harus diperiksa karena teks yang terdengar wajar belum tentu terbaca dengan benar.Waktu baca 3 menit

Tanda tangan PDF tanpa cetak: pilih salinan yang benarTambahkan tanda tangan terlihat pada versi PDF yang sudah final, lalu periksa letaknya pada hasil unduhan. Jika penerima meminta metode tertentu, pastikan kebutuhannya sebelum mengisi dokumen. Gambar atau coretan tanda tangan bukan otomatis tanda tangan digital berbasis sertifikat.Waktu baca 3 menit

Membuat dan mengisi formulir PDF yang bisa disimpanGunakan bidang formulir yang sesuai untuk membuat PDF dapat diisi. Coba dengan jawaban fiktif, simpan, lalu tutup dan buka lagi hasil unduhannya. Garis kosong pada halaman atau teks yang ditaruh di atasnya tidak otomatis menjadi bidang interaktif.Waktu baca 3 menit

Scan dokumen lewat HP menjadi PDF yang terbacaLetakkan kertas rata, gunakan cahaya merata, dan periksa empat sudut sebelum menyimpan PDF. Buka hasil unduhan untuk memeriksa urutan serta tulisan kecil. Koreksi bentuk kertas tidak menambah detail yang kabur, dan pencarian teks mungkin memerlukan OCR terpisah.Waktu baca 3 menit

PowerPoint dan PDF: periksa slide setelah konversiUntuk salinan baca, ubah presentasi menjadi PDF dan periksa setiap slide pada hasilnya. Untuk menyunting PDF sebagai presentasi, tinjau teks serta bentuk yang dibangun ulang. Animasi, catatan pembicara, dan data asli grafik tidak otomatis pulih dari halaman PDF.Waktu baca 3 menit

Menambah watermark PDF tanpa menutup isiTambahkan penanda singkat, lalu atur letak, ukuran, dan transparansi agar isi tetap terbaca. Periksa beberapa jenis halaman pada hasil unduhan. Watermark menandai salinan, tetapi tidak mengeluarkan informasi atau menjamin isi tidak dapat digunakan kembali.Waktu baca 3 menit

Menyensor data PDF secara permanen sebelum dibagikanSensor permanen harus mengeluarkan isi yang dipilih, bukan hanya menaruh kotak hitam di atasnya. Buka hasil unduhan, cari data yang dihapus, dan periksa kemunculan lain. Komentar, bidang formulir, serta metadata perlu ditinjau sesuai cakupan pembersihan yang digunakan.Waktu baca 3 menit

Mengubah PDF ke PDF/A dan memvalidasi hasilnyaPilih profil PDF/A yang diperlukan dan periksa hasil validasi untuk profil yang sama. Bandingkan pula isi serta tampilan keluaran dengan sumber. Kesesuaian format tidak membuktikan angka benar atau menjamin dokumen diterima di setiap prosedur.Waktu baca 3 menit

PDF tidak bisa dicetak atau disalin: periksa penyebabnyaJika PDF terbuka tetapi cetak atau salin tidak berjalan, baca pesan yang tepat dan periksa izin dokumen. Password pembuka yang tidak diketahui dan halaman gambar merupakan masalah berbeda. Olah hanya salinan yang boleh digunakan, lalu uji kembali tindakan yang memang diperlukan.Waktu baca 3 menit

Mengatur urutan halaman PDF dan menyimpan hasilnyaKenali halaman dari isinya, pindahkan ke urutan yang diperlukan, lalu simpan PDF baru. Baca pergantian antarhalaman pada hasil unduhan. Nomor tercetak, daftar isi, dan rujukan belum tentu ikut menyesuaikan posisi baru.Waktu baca 3 menit

Apakah tanda tangan elektronik sah di Indonesia?Tanda tangan elektronik dapat memiliki kekuatan hukum di Indonesia apabila memenuhi persyaratan yang berlaku. PP 71 Tahun 2019 mengatur hubungan dengan penanda tangan, kendali data, persetujuan, dan kemampuan mendeteksi perubahan. Gambar tanda tangan pada PDF belum membuktikan bahwa seluruh syarat tersebut terpenuhi.Waktu baca 3 menit

Cara verifikasi tanda tangan digital PDF di IndonesiaGunakan PDF asli dan periksa setiap tanda tangan yang tertanam di dalamnya. Cocokkan identitas penanda tangan, integritas isi, perubahan sesudah penandatanganan, serta informasi sertifikat. Hasil tidak dikenal atau belum dapat diperiksa harus ditindaklanjuti, bukan dianggap sebagai persetujuan.Waktu baca 3 menit

TTE tersertifikasi dan gambar tanda tangan: bedanyaGambar tanda tangan adalah bagian dari tampilan halaman, sedangkan TTE tersertifikasi mempunyai persyaratan sertifikat dan proses tersendiri. TTE tidak tersertifikasi juga tidak boleh disamakan begitu saja dengan gambar. Tentukan jenis bukti yang diminta penerima, lalu periksa berkas asli.Waktu baca 3 menit

أدلة العمل على ملفات PDF

هل التوقيع الإلكتروني معتمد قانونًا في الإمارات؟يعترف تشريع المعاملات الإلكترونية وخدمات الثقة في الإمارات بالتوقيعات الإلكترونية وفق شروطه. وللتوقيع الإلكتروني المؤهل متطلبات محددة لا تتحقق بمجرد وضع صورة توقيع على الصفحة. افحص هوية الموقّع ونوع التوقيع ومتطلبات المعاملة قبل اعتماد العقد.مدة القراءة: 3 دقائق

كيف تتحقق من توقيع PDF في الإمارات؟افحص ملف PDF الأصلي، ثم اقرأ بيانات كل توقيع والشهادة والمحتوى الذي يغطيه. تحقّق من التعديلات اللاحقة ومعلومات الثقة كلًّا على حدة. وإذا اشترطت جهة في الإمارات إجراء تحقق محددًا، فأكمل ذلك الإجراء أيضًا؛ النتيجة الفنية لا تستبدل متطلبات الجهة.مدة القراءة: 3 دقائق

ما حجية التوقيع الإلكتروني في السعودية؟للتوقيع الإلكتروني المنفذ وفق نظام التعاملات الإلكترونية السعودي آثار نظامية، وليس مجرد شكل على الصفحة. يعتمد تقييمه على استيفاء الشروط وربطه بصاحبه وبالمحتوى الموقع. تحقّق كذلك من متطلبات المعاملة وصلاحية الشخص الذي يوقّع، فلا تحسمهما صورة توقيع أو نتيجة فنية واحدة.مدة القراءة: 3 دقائق

كيف تتحقق من توقيع PDF في السعودية؟ابدأ بالأصل الإلكتروني، ثم افحص كل توقيع والشهادة والمحتوى الذي يحميه. عند وجود رمز تحقق أو مرجع رسمي، استخدم آلية الجهة المصدرة أيضًا ولا تخلطها بفحص التوقيع داخل PDF. احتفظ بالأصل والنتيجة وسجّل ما لم يمكن التحقق منه.مدة القراءة: 3 دقائق

پی ڈی ایف کے رہنما مضامین

پاکستان میں الیکٹرانک دستخط کی قانونی حیثیت کیا ہے؟پاکستان میں الیکٹرانک ٹرانزیکشنز آرڈیننس 2002 الیکٹرانک دستخط کی قانونی شناخت فراہم کرتا ہے۔ عام الیکٹرانک دستخط کے ثبوت اور قانون میں بیان کردہ ایڈوانسڈ دستخط سے متعلق قیاس ایک جیسے نہیں ہیں۔ معاہدے کی نوعیت، دستخط کرنے والے کا اختیار اور اصل الیکٹرانک ریکارڈ بھی دیکھنا ضروری ہے۔پڑھنے کا وقت: 3 منٹ

پاکستان میں پی ڈی ایف کے ڈیجیٹل دستخط کیسے چیک کریں؟اصل پی ڈی ایف محفوظ کریں اور ہر دستخط میں شناخت، محفوظ مواد اور بعد کی تبدیلیاں الگ الگ دیکھیں۔ سرٹیفکیٹ پر اعتماد کی جانچ، متن درست رہنے کی جانچ سے مختلف ہے۔ کسی پاکستانی ادارے کی دستاویز میں اپنا تصدیقی نمبر یا طریقہ ہو تو وہ مرحلہ بھی مکمل کریں۔پڑھنے کا وقت: 3 منٹ

دستخط کی تصدیق کے لیے پرائیویٹ کی دینی چاہیے؟کسی دوسرے کی دستخط شدہ پی ڈی ایف کی جانچ کے لیے اپنی پرائیویٹ کی دینا ضروری نہیں ہے۔ تصدیق میں دستاویز کے ساتھ موجود دستخط اور سرٹیفکیٹ کی عوامی معلومات دیکھی جاتی ہیں۔ اپنی طرف سے نیا دستخط بنانا ایک الگ عمل ہے جسے موصولہ فائل کی جانچ کے ساتھ نہ ملائیں۔پڑھنے کا وقت: 3 منٹ

Mga gabay sa paggamit ng PDF

Legal ba ang electronic signature sa Pilipinas?Kinikilala ng Republic Act 8792 ang electronic signature kapag natutugunan ang mga kondisyon nito. Mahalaga ang pagkakakilanlan, pagsang-ayon sa dokumento, at paraang maaasahan para sa transaksiyon. Hindi awtomatikong napapalitan ng isang larawan ng pirma ang lahat ng hinihinging pormalidad o ebidensiya.3 minutong pagbasa

Paano i-verify ang PNPKI signature sa PDF?Kunin ang orihinal na PDF at suriin ang bawat digital na lagda, sertipiko at pagbabago pagkatapos lagdaan. Magkaibang resulta ang integridad ng nilalaman at pagkilala sa sertipiko. Kung may itinakdang verifier o proseso ang ahensiyang tatanggap, gawin din ang hakbang na iyon.3 minutong pagbasa

Pirma sa larawan o digital signature: ano ang kaibahan?Ang larawan ng pirma ay bahagi ng nakikita sa pahina. Ang embedded digital signature ay may datos na sinusuri kaugnay ng dokumento at sertipiko. Maaari silang magkasama, pero hindi patunay ng isa ang pagkakaroon ng isa pa.3 minutong pagbasa

Poradniki dotyczące PDF

Word na PDF: jak zachować układ dokumentuZapisz gotowy dokument Word jako PDF, a potem otwórz pobrany plik i porównaj układ stron. Sprawdź zwłaszcza tabele, polskie znaki i miejsce na podpis. DOCX zachowaj jako plik roboczy do następnych zmian.3 min czytania

PDF na Word: konwersja i kontrola tekstuPrzekonwertuj PDF na DOCX, a następnie porównaj tekst i kolejność akapitów z oryginałem. Skan może wymagać rozpoznania pisma przez OCR. Podobny wygląd strony nie oznacza jeszcze poprawnej struktury tabel ani tekstu.3 min czytania

Zdjęcia JPG do jednego PDF: kolejność i czytelnośćDodaj zdjęcia JPG, ustaw kolejność i orientację, a następnie pobierz jeden PDF. Sprawdź, czy całe dokumenty i drobne napisy mieszczą się na stronach. Zapis zdjęć w PDF nie poprawia ostrości i sam nie dodaje wyszukiwanego tekstu.3 min czytania

Strony PDF na JPG lub PNG: jak sprawdzić wynikWyeksportuj wybrane strony PDF do JPG lub PNG i sprawdź pobrane obrazy. Obraz całej strony to coś innego niż oryginalne zdjęcie osadzone w PDF. Oceń drobny tekst, linie tabel i krawędzie w rozmiarze, w którym grafika będzie używana.3 min czytania

Dzielenie PDF i wyodrębnianie wybranych stronWybierz pozycje stron i zapisz je w nowym PDF. Numer wydrukowany na kartce może różnić się od miejsca strony w pliku. W pobranej kopii sprawdź początek, koniec i kompletność wybranego fragmentu.3 min czytania

Usuwanie stron z PDF bez utraty potrzebnych treściZaznacz strony do usunięcia i pobierz nowy PDF z pozostałą zawartością. Sprawdź wybór w podglądzie, ponieważ drukowana numeracja może nie odpowiadać pozycjom w pliku. Po zapisaniu przeczytaj miejsca, które po usunięciu stron znalazły się obok siebie.3 min czytania

Obracanie stron PDF i zapis poprawnej orientacjiZaznacz strony ustawione bokiem, obróć je do właściwego kierunku i zapisz nowy PDF. Obrót samego widoku w czytniku może nie zmieniać pliku. Otwórz pobraną kopię i sprawdź także strony, które miały pozostać bez zmian.3 min czytania

Numeracja stron oraz nagłówek i stopka w PDFUstal zakres oraz pierwszy numer, a następnie wybierz położenie numeracji. Nagłówek i stopkę z własnym tekstem dodaj osobno, jeśli są potrzebne. Sprawdź początek, koniec i nietypowe strony pobranego PDF, żeby nowe oznaczenia nie nachodziły na treść.3 min czytania

Zabezpieczenie PDF hasłem otwarciaUstaw hasło otwarcia, pobierz chroniony PDF i otwórz go ponownie, żeby sprawdzić żądanie hasła. Ograniczenia drukowania lub kopiowania to osobna kwestia. Dane, których odbiorca nie powinien zobaczyć, trzeba usunąć z udostępnianej kopii.3 min czytania

Usuwanie znanego hasła otwarcia PDFJeśli znasz hasło i masz prawo zmienić dokument, otwórz PDF i zapisz kopię bez hasła otwarcia. Pobraną kopię zamknij i otwórz ponownie, aby sprawdzić dostęp. To nie jest metoda odgadywania nieznanego hasła.3 min czytania

Excel i PDF: konwersja tabel oraz kontrola liczbPrzy Excel na PDF sprawdź obszar wydruku i podział szerokich tabel na strony. Przy PDF na Excel porównaj układ komórek oraz typy danych ze źródłem. Widoczna suma nie dowodzi, że zostały odtworzone formuły arkusza.3 min czytania

Edycja tekstu w PDF i poprawianie literówekZaznacz prawdziwy tekst w edytorze PDF, popraw go i zapisz nową kopię. Skan może wcześniej wymagać rozpoznania pisma. Biały prostokąt na starym napisie nie potwierdza, że informacja została usunięta z pliku.3 min czytania

Zmniejszanie PDF do limitu rozmiaru załącznikaWybierz rozmiar docelowy odpowiadający limitowi wysyłki i sprawdź rzeczywisty rozmiar wyniku. Drobne napisy, pieczęcie i cyfry muszą pozostać czytelne. Jeśli limit nie został osiągnięty, oceń źródło oraz zakres załączników zamiast uznawać samą kompresję za sukces.3 min czytania

Łączenie plików PDF w poprawnej kolejnościDodaj potrzebne pliki PDF, ustaw kolejność i pobierz wspólny dokument. Sprawdź przejścia między częściami oraz powtarzające się strony. Podpisane źródła zachowaj oddzielnie od połączonej kopii do czytania.3 min czytania

OCR skanu PDF: wyszukiwanie i kontrola tekstuOCR rozpoznaje pismo na obrazie, aby można było szukać słów lub pobrać tekst. Wybierz język dokumentu i porównaj wynik ze skanem. Nazwiska, numery oraz kwoty wymagają osobnej kontroli, nawet jeśli zdania brzmią poprawnie.3 min czytania

Podpisywanie PDF bez drukowania: kontrola kopiiDodaj widoczny podpis do ostatecznej wersji PDF i sprawdź jego położenie w pobranej kopii. Jeśli odbiorca wymaga określonej metody, ustal ją przed podpisaniem. Rysunek lub zdjęcie podpisu nie jest automatycznie podpisem cyfrowym opartym na certyfikacie.3 min czytania

Tworzenie i wypełnianie formularza PDFFormularz PDF wymaga prawdziwych pól odpowiedniego rodzaju. Wypełnij próbę fikcyjnymi danymi, zapisz ją i otwórz ponownie, żeby sprawdzić odpowiedzi. Sama linia albo stały napis nad nią nie tworzy pola interaktywnego.3 min czytania

Skanowanie dokumentów telefonem do czytelnego PDFPołóż dokument płasko, zadbaj o równe światło i sprawdź cztery narożniki przed zapisaniem PDF. W pobranej kopii obejrzyj drobny druk i kolejność stron. Wyprostowanie kształtu kartki nie odtwarza niewyraźnych szczegółów, a wyszukiwanie tekstu może wymagać osobnego OCR.3 min czytania

PowerPoint i PDF: konwersja i kontrola slajdówDo czytania utwórz PDF z prezentacji i sprawdź każdy slajd w pobranym wyniku. Przy tworzeniu prezentacji z PDF skontroluj odtworzony tekst oraz kształty. Animacje, notatki prelegenta i dane źródłowe wykresu nie wracają automatycznie ze statycznej strony.3 min czytania

Znak wodny w PDF bez zasłaniania treściDodaj krótki znak wodny i ustaw jego położenie, wielkość oraz przezroczystość tak, by treść pozostała czytelna. Obejrzyj różne układy stron w pobranej kopii. Znak opisuje dokument, ale nie usuwa informacji i nie gwarantuje blokady ponownego wykorzystania.3 min czytania

Trwałe zaczernianie danych w PDF przed wysłaniemTrwałe zaczernienie ma usunąć wybraną zawartość, a nie tylko przykryć ją czarnym polem. W pobranej kopii wyszukaj usunięte dane i sprawdź ich inne wystąpienia. Komentarze, pola formularza oraz metadane wymagają kontroli odpowiedniej do zastosowanego czyszczenia.3 min czytania

Konwersja PDF do PDF/A i sprawdzenie zgodnościWybierz potrzebny profil PDF/A, wykonaj konwersję i sprawdź walidację dla tego samego profilu. Porównaj również treść oraz wygląd stron ze źródłem. Zgodność formatu nie poświadcza prawdziwości danych ani przyjęcia dokumentu w każdej procedurze.3 min czytania

PDF blokuje drukowanie lub kopiowanie: co sprawdzić?Gdy PDF się otwiera, ale nie działa drukowanie lub kopiowanie, przeczytaj komunikat i sprawdź uprawnienia dokumentu. Nieznane hasło otwarcia oraz strona będąca obrazem to inne problemy. Przetwarzaj tylko uprawnioną kopię i ponownie wypróbuj potrzebną czynność.3 min czytania

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পিডিএফ, আবেদন ও স্বাক্ষর: বাংলায় গাইড

নথি, আবেদন ও স্বাক্ষরের কাজে সরাসরি সহায়তা, সঙ্গে বাংলা লেখা ও ইউনিকোডের সমস্যার সমাধান।

বাংলাদেশে ডিজিটাল স্বাক্ষর কি আইনগতভাবে বৈধ?বাংলাদেশের তথ্য ও যোগাযোগ প্রযুক্তি আইনে ইলেকট্রনিক রেকর্ড ও স্বাক্ষরের স্বীকৃতির বিধান আছে। তবে পিডিএফে স্বাক্ষরের ছবি বসালেই আইন ও সংশ্লিষ্ট দপ্তরের সব শর্ত পূরণ হয় না। স্বাক্ষরদাতার পরিচয়, সম্মতি, নথির সঙ্গে স্বাক্ষরের সম্পর্ক এবং কাজটির নিজস্ব নিয়ম আলাদা করে দেখতে হবে।পড়তে সময় লাগবে প্রায় ৩ মিনিট

বাংলাদেশে পিডিএফের ডিজিটাল স্বাক্ষর যাচাই করবেন কীভাবে?প্রথমে স্বাক্ষর করা আসল পিডিএফ সংগ্রহ করুন। তারপর স্বাক্ষরদাতা, নথির অক্ষত অবস্থা, পরের পরিবর্তন এবং সার্টিফিকেটের তথ্য আলাদা করে দেখুন। কোনো দপ্তরের নিজস্ব যাচাই নম্বর বা পদ্ধতি থাকলে সেটিও ব্যবহার করতে হবে; পিডিএফের ফল দিয়ে সেই ধাপ বাদ দেওয়া যাবে না।পড়তে সময় লাগবে প্রায় ৩ মিনিট

টেলিটকের ছবির ও স্বাক্ষরের সাইজ কত হবে?টেলিটকের প্রকাশিত ভ্যালিডেটরে ছবির মাপ ৩০০×৩০০ পিক্সেল, সর্বোচ্চ ১০০ কেবি; স্বাক্ষর ৩০০×৮০ পিক্সেল, সর্বোচ্চ ৬০ কেবি। ছবি ও স্বাক্ষর আলাদা JPG ফাইল হিসেবে তৈরি করুন। যে নিয়োগে আবেদন করছেন, তার বিজ্ঞপ্তি ও আপলোডের শর্ত ভিন্ন হলে সেই নির্দেশনাই চূড়ান্ত।পড়তে সময় লাগবে প্রায় ৩ মিনিট

বিসিএসের ছবি ও স্বাক্ষরের সাইজ কীভাবে ঠিক করবেন?বিপিএসসির প্রকাশিত নির্দেশনায় ছবির মাপ ৩০০×৩০০ পিক্সেল এবং ফাইল ১০০ কেবির মধ্যে রাখতে বলা হয়েছে। স্বাক্ষরের প্রচলিত নির্দিষ্ট মাপ ৩০০×৮০ পিক্সেল, সর্বোচ্চ ৬০ কেবি; আপনার পরীক্ষার বিজ্ঞপ্তি ও Help অংশ মিলিয়ে নিন। ছবি ও স্বাক্ষর ঠিক জায়গায় এসেছে কি না প্রিভিউ দেখে তারপর জমা দিন।পড়তে সময় লাগবে প্রায় ৩ মিনিট

ঢাকা বিশ্ববিদ্যালয়ে ভর্তির ছবির সাইজ কত?ঢাকা বিশ্ববিদ্যালয়ের প্রকাশিত স্নাতক ভর্তি নির্দেশনায় ছবির প্রস্থ ৪৬০ থেকে ৪৮০, উচ্চতা ৬০০ থেকে ৬২০ পিক্সেল এবং ফাইল ৩০ থেকে ২০০ কেবি বলা আছে। JPG বা JPEG দিন; ৪৬৫×৬২০ পিক্সেল এই পরিসরের একটি মাপ। আবেদন প্যানেলে আপনার সেশনের নির্দেশনা ভিন্ন হলে সেই শর্ত অনুসরণ করুন।পড়তে সময় লাগবে প্রায় ৩ মিনিট

গুচ্ছ ভর্তির ছবির সাইজ ও সেলফি কীভাবে প্রস্তুত করবেন?প্রকাশিত GST আবেদন নির্দেশিকায় সাদা পটভূমির ৩০০×৩০০ পিক্সেল ছবি ও সর্বোচ্চ ১০০ কেবি সীমা আছে। তবে বর্তমান আবেদন প্যানেলের ছবি নির্দেশিকা ও সেলফির শর্তই চূড়ান্ত। একটি আপলোডের জন্য তৈরি JPG আর পোর্টাল থেকে সরাসরি তোলা সেলফি একই ধাপ নয়।পড়তে সময় লাগবে প্রায় ৩ মিনিট

Word এ বিজয়ে লেখা ইউনিকোডে কীভাবে করবেন (টেবিল আর ইংরেজি ঠিক রেখে)লেখা কপি করে পেস্ট না করে পুরো .docx ফাইলটাই কনভার্টারে দিন: তাহলে শুধু বিজয় ফন্টের লেখা ইউনিকোডে বদলায়, ইংরেজি লেখা যেমন ছিল তেমন থাকে, আর টেবিল থাকে নিজের জায়গায়।পড়তে সময় লাগবে প্রায় ৪ মিনিট

ফেসবুকে বিজয়ে লেখা কেন ভেঙে যায় (আর পোস্ট করার আগে কী করবেন)বিজয়ে লেখা আসলে ইংরেজি অক্ষর, যা শুধু SutonnyMJ ফন্টে বাংলা দেখায়; ফেসবুকে সেই ফন্ট নেই, তাই পোস্ট করার আগে লেখাটা বিজয় থেকে ইউনিকোডে বদলে নিন।পড়তে সময় লাগবে প্রায় ৪ মিনিট

সরকারি পিডিএফ থেকে বাংলা কপি করলে হিজিবিজি আসে কেন, আর ঠিক করার উপায়পিডিএফটা বিজয়ে লেখা ফাইল থেকে বানানো, তাই তার লেখার স্তরে বাংলা নয়, বিজয়ের ইংরেজি কোড জমা আছে; পিডিএফটা বিজয় থেকে ইউনিকোড কনভার্টারে দিলে সেই কোড পড়ে ইউনিকোড বাংলা বানিয়ে দেয়, যা কপি বা .docx হিসেবে নিতে পারেন।পড়তে সময় লাগবে প্রায় ৪ মিনিট

ইউনিকোড থেকে বিজয় করলে ইংরেজি লেখা বাংলা হয়ে যায় কেনবিজয়ের বাংলা নিজেই ইংরেজি অক্ষর দিয়ে বানানো, তাই SutonnyMJ ফন্ট ইংরেজি শব্দকেও বাংলা হিসেবে আঁকে; পুরো ফাইল দিয়ে কনভার্ট করলে ইংরেজি নিজের ফন্টে থেকে যায়, আর পেস্ট করে কনভার্ট করলে ওয়ার্ডে ইংরেজি শব্দগুলোতে আলাদা করে ইংরেজি ফন্ট দিতে হয়।পড়তে সময় লাগবে প্রায় ৪ মিনিট

কোনো কনভার্টার নির্ভুল কিনা নিজে যাচাই করবেন কীভাবেসাতটা কঠিন শব্দের সঠিক বিজয় কোড কনভার্টারে দিন আর ফল মিলিয়ে দেখুন: সূক্ষ্ম, ফেব্রুয়ারি, প্রকাশিত, সংক্রান্ত, খণ্ড, বৈচিত্র্য আর কর্তৃপক্ষ ঠিকঠাক এলে কনভার্টার কঠিন জায়গাগুলো সামলাতে পারে।পড়তে সময় লাগবে প্রায় ৪ মিনিট

এক্সেলে বিজয়ে লেখা নাম-ঠিকানা ইউনিকোডে রূপান্তর করবেন কীভাবে, যাতে সর্ট আর সার্চ কাজ করে?বিজয়ে লেখা ঘরে আসলে বাংলা অক্ষর থাকে না, থাকে “iwng”-এর মতো ইংরেজি অক্ষর; তাই সার্চ আর সর্ট ভুল হয়। .xlsx ফাইলটা বিজয় থেকে ইউনিকোড টুলে দিন: শুধু বিজয় ফন্টের লেখা বাংলা ইউনিকোডে বদলাবে, ইংরেজিতে লেখা ঘর যেমন আছে তেমন থাকবে।পড়তে সময় লাগবে প্রায় ৫ মিনিট

প্রেসে পাঠানোর আগে ইউনিকোড লেখা বিজয়ে রূপান্তর করবেন কীভাবে?লেখাটা ইউনিকোড থেকে বিজয় টুলে বদলে বাংলা অংশে সুতনি এমজে ফন্ট দিন, ইংরেজি শব্দে ইংরেজি ফন্ট রাখুন, তারপর কোটেশন, অঙ্ক আর কঠিন যুক্তাক্ষরগুলো মিলিয়ে দেখে পাঠান।পড়তে সময় লাগবে প্রায় ৪ মিনিট

নিকস, সুতনি এমজে আর ইউনিকোডের পার্থক্য কী?ইউনিকোড হলো লেখা জমা রাখার নিয়ম, কোনো ফন্ট নয়। নিকস একটা ইউনিকোড বাংলা ফন্ট, আর সুতনি এমজে বিজয়ের ফন্ট, যা ইংরেজি অক্ষরের জায়গায় বাংলা এঁকে দেখায়। ওয়েবসাইট, ফেসবুক, ফোন আর অনলাইন ফর্মে ইউনিকোড লাগে; সুতনি এমজে লাগে মূলত বিজয়ে চলা প্রেস আর ডিজাইনের কাজে।পড়তে সময় লাগবে প্রায় ৪ মিনিট

মোবাইলে বিজয়ে লেখা ইউনিকোডে রূপান্তর করবেন কীভাবে, অ্যাপ ছাড়াই?ফোনের ব্রাউজারে বিজয় থেকে ইউনিকোড পেজ খুলে হিজিবিজি লেখাটা পেস্ট করুন; সাথে সাথে বাংলা হয়ে যাবে। তারপর কপি করে যেখানে দরকার সেখানে দিন। কিছু ইনস্টল করতে হয় না।পড়তে সময় লাগবে প্রায় ৪ মিনিট

পুরনো বিজয় আর নতুন বিজয় কোডে একই লেখা দুই রকম কেন?বিজয়ের নতুন ধরনের লেখায় কয়েকটা অক্ষর নতুন কোডে বসে, যেমন ক্ষ “¶”-এর বদলে “ÿ”, আর কিছু পুরনো কোডের মানেই বদলে গেছে। শুধু পুরনো তালিকা জানা কনভার্টার তাই “শুরু”-কে বানায় “শুরম্ন”। দুই ধরনের কোডই চেনে এমন কনভার্টার ব্যবহার করুন, আর ফলাফলে কঠিন শব্দগুলো মিলিয়ে নিন।পড়তে সময় লাগবে প্রায় ৪ মিনিট

বিজয়ে লেখা পুরনো ডকুমেন্টে সার্চ কাজ করে না কেন?বিজয় লেখায় বাংলা অক্ষর জমা থাকে না, থাকে ইংরেজি অক্ষর; তাই বাংলায় টাইপ করে খুঁজলে মেলে না। পুরনো ফাইলগুলো একবার ইউনিকোডে রূপান্তর করে সেটাকেই মূল কপি হিসেবে রাখুন, আর প্রেসের জন্য বিজয় লাগলে প্রতিবার সেই মূল কপি থেকে বানান।পড়তে সময় লাগবে প্রায় ৪ মিনিট

हिन्दी में PDF और आवेदन के गाइड

PDF, आवेदन और हस्ताक्षर के काम की जानकारी, साथ में कृतिदेव और यूनिकोड की व्यावहारिक मदद।

भारत में डिजिटल सिग्नेचर की कानूनी मान्यता क्या है?भारत के सूचना प्रौद्योगिकी अधिनियम में निर्धारित तरीके से किए गए इलेक्ट्रॉनिक हस्ताक्षर को कानूनी मान्यता दी गई है। किसी PDF पर हस्ताक्षर की फोटो चिपका देना अपने आप उस तरीके या DSC की शर्तें पूरी नहीं करता। दस्तावेज़ का प्रकार, संबंधित पोर्टल की प्रक्रिया और हस्ताक्षर करने वाले का अधिकार अलग से जाँचें।पढ़ने में लगभग 3 मिनट

DSC से हस्ताक्षर किए PDF को कैसे वेरिफाई करें?मूल PDF खोलकर हर हस्ताक्षर, प्रमाणपत्र और हस्ताक्षर के बाद हुए बदलाव की जाँच करें। सामग्री की अखंडता और प्रमाणपत्र पर भरोसा अलग नतीजे हैं। यदि विभाग अपना सत्यापन या जमा करने का तरीका निर्धारित करता है तो वह प्रक्रिया भी पूरी करें।पढ़ने में लगभग 3 मिनट

IBPS और SBI में फोटो और सिग्नेचर का साइज कितना हो?प्रकाशित बैंक स्कैनिंग निर्देशों में फोटो के लिए 200×230 पिक्सेल और 20 से 50 KB, सिग्नेचर के लिए 140×60 और 10 से 20 KB दिए हैं। अंगूठे और हस्तलिखित घोषणा की अलग शर्तें हैं; संबंधित भर्ती की अधिसूचना देखें। JPG की तैयारी और आवेदन के दौरान माँगी गई लाइव फोटो अलग चरण हैं।पढ़ने में लगभग 3 मिनट

WhatsApp या Facebook पर कृतिदेव में लिखी हिंदी अंग्रेजी अक्षरों जैसी क्यों दिखती है (और भेजने से पहले क्या करें)कृतिदेव में लिखी हिंदी असल में अंग्रेजी अक्षर होती है, जिसे सिर्फ Kruti Dev 010 फॉन्ट हिंदी जैसा दिखाता है। WhatsApp और Facebook में यह फॉन्ट नहीं होता, इसलिए भेजने से पहले लेख को कृतिदेव से यूनिकोड में बदल लें।पढ़ने में लगभग 5 मिनट

सरकारी PDF से हिंदी कॉपी करने पर "Hkkjr ljdkj" जैसा क्यों आता है, और इसे सही हिंदी में कैसे बदलेंऐसी PDF के अंदर हिंदी नहीं, कृतिदेव के अंग्रेजी अक्षर जमा होते हैं। लेख कॉपी करने के बजाय पूरी PDF कृतिदेव से यूनिकोड पेज पर डालें: उसका लेख पढ़कर यूनिकोड में बदल जाता है, जिसे कॉपी करें या .txt या Word फाइल में डाउनलोड करें।पढ़ने में लगभग 5 मिनट

कृतिदेव में बनी Word फाइल को मंगल (यूनिकोड) में कैसे बदलें, टेबल और इंग्लिश शब्द बिगड़े बिनालेख कॉपी-पेस्ट करने के बजाय पूरी .docx फाइल कृतिदेव से यूनिकोड पेज पर डालें। तब सिर्फ Kruti Dev फॉन्ट वाला हिंदी लेख मंगल में बदलता है, इंग्लिश अपने फॉन्ट में रहती है और टेबल अपनी जगह रहती है।पढ़ने में लगभग 5 मिनट

Excel में कृतिदेव में लिखे नाम-पते यूनिकोड में कैसे करें, ताकि सर्च और सॉर्ट काम करेपूरी .xlsx फाइल कृतिदेव से यूनिकोड पेज पर डालें। सिर्फ Kruti Dev फॉन्ट वाले खाने यूनिकोड में बदलते हैं, नंबर और अंग्रेजी कॉलम वैसे ही रहते हैं, और इसके बाद हिंदी में खोज और सॉर्ट ठीक काम करते हैं।पढ़ने में लगभग 4 मिनट

प्रिंटिंग प्रेस, PageMaker या CorelDRAW के लिए मंगल को कृतिदेव में कैसे बदलेंपुराने PageMaker और CorelDRAW यूनिकोड हिंदी की मात्राएँ ठीक से नहीं जोड़ पाते। लेख को मंगल से कृतिदेव पेज पर बदलें, नतीजे को Kruti Dev 010 फॉन्ट दें, और अंग्रेजी शब्दों को अंग्रेजी फॉन्ट दें।पढ़ने में लगभग 4 मिनट

कृतिदेव, मंगल और यूनिकोड में क्या फर्क है? आसान भाषा मेंमंगल यूनिकोड का एक फॉन्ट है, इसलिए मंगल में लिखी हिंदी असली हिंदी अक्षर होती है जो हर जगह चलती है। कृतिदेव में हिंदी अंग्रेजी अक्षरों के रूप में जमा होती है और सिर्फ Kruti Dev फॉन्ट में हिंदी दिखती है, इसलिए एक से दूसरे में जाने के लिए लेख बदलना पड़ता है, सिर्फ फॉन्ट नहीं।पढ़ने में लगभग 4 मिनट

सरकारी दफ्तर अब यूनिकोड क्यों मांग रहे हैं, और पुरानी कृतिदेव फाइलों का क्या करेंकेंद्र सरकार के दफ्तरों से 2009 से कहा गया है कि हिंदी का काम यूनिकोड फॉन्ट में करें, क्योंकि यूनिकोड का लेख हर कंप्यूटर पर खुलता है और उसमें खोज हो सकती है। पुरानी कृतिदेव फाइलों की एक बार यूनिकोड कॉपी बना लें, और मूल फाइलें भी संभालकर रखें।पढ़ने में लगभग 4 मिनट

CPCT, UP Police, UPSSSC टाइपिंग टेस्ट: कृतिदेव और मंगल में क्या फर्क है, और अभ्यास कैसे करेंकोई टाइपिंग टेस्ट Kruti Dev 010 मांगता है और कोई मंगल (यूनिकोड), इसलिए पहले अपनी भर्ती का नोटिस देखें। अभ्यास के लिए किसी भी यूनिकोड लेख को यूनिकोड से कृतिदेव पेज पर बदल लें, और अपना टाइप किया कृतिदेव लेख वापस यूनिकोड में बदलकर कहीं भी भेज या जाँच सकते हैं।पढ़ने में लगभग 4 मिनट

"चौथा" बदलकर "चैथा" क्यों हो जाता है? कृतिदेव कन्वर्ज़न की आम गलतियाँ और 5 शब्दों से खुद जाँचज़्यादातर गलतियाँ वहाँ होती हैं जहाँ कृतिदेव में अक्षर दिखने के क्रम में टाइप होते हैं: छोटी इ की मात्रा, रेफ, औ, ॉ, हलंत और ॥। चौथा, कर्त्तव्य, डॉक्टर, विद्वान् और ॥ श्री ॥ के कृतिदेव कोड पेस्ट करके देख लें कि कन्वर्टर सही हिंदी देता है या नहीं।पढ़ने में लगभग 4 मिनट

यूनिकोड से कृतिदेव करने पर इंग्लिश शब्द और लिंक हिंदी जैसे क्यों दिखने लगते हैंकृतिदेव में हर अंग्रेजी अक्षर किसी हिंदी अक्षर का कोड है, इसलिए Kruti Dev 010 फॉन्ट लगते ही इंग्लिश शब्द भी हिंदी जैसे दिखने लगते हैं। कृतिदेव वाले लेख में इंग्लिश शब्दों को अलग से Arial जैसा अंग्रेजी फॉन्ट दें, या पूरी Word फाइल बदलें ताकि इंग्लिश अपने फॉन्ट में रहे।पढ़ने में लगभग 4 मिनट

Auf Deutsch: PDF im Alltag

Unterschreiben, verkleinern, zusammenfügen: Antworten auf die PDF-Fragen, die im Alltag wirklich vorkommen.

PDF auf eine bestimmte Größe verkleinernWählen Sie beim Komprimieren eine Zielgröße, wenn ein Upload eine feste Obergrenze vorgibt. Prüfen Sie anschließend die tatsächliche Dateigröße und die kleinste Schrift im Ergebnis. Ein PDF lässt sich nicht beliebig verkleinern; wenn das Ziel nicht erreicht wird, brauchen Sie eine andere Zusammenstellung oder eine bessere Ausgangsdatei.3 Min. Lesezeit

Mehrere PDF-Dateien zusammenfügen und richtig sortierenFügen Sie die PDFs hinzu, legen Sie ihre Reihenfolge fest und prüfen Sie die gemeinsame Datei nach dem Download. Eine Zusammenführung ordnet die vorhandenen Seiten, sie vereinheitlicht nicht automatisch deren Inhalt oder Papierformat. Signierte Originaldateien sollten zusätzlich unverändert erhalten bleiben.3 Min. Lesezeit

Gescanntes PDF durchsuchbar machen: OCR richtig prüfenEin Scan wird durch OCR durchsuchbar, indem eine erkannte Textebene zur abgebildeten Seite hinzukommt. Wählen Sie die passende Sprache und prüfen Sie das Ergebnis an Namen, Zahlen und mehrspaltigen Abschnitten. Eine erfolgreich erkannte Seite ist weder automatisch fehlerfrei noch vollständig wie ein Textdokument bearbeitbar.3 Min. Lesezeit

Ausfüllbares PDF-Formular erstellen und ausfüllenEin ausfüllbares PDF braucht Formularfelder, nicht nur gezeichnete Linien oder nachträglich platzierte Schrift. Legen Sie passende Feldtypen an und testen Sie das Formular mit fiktiven Angaben. Öffnen Sie den gespeicherten Download erneut, damit Sie leere Felder, ungewollte Wiederholungen und abgeschnittene Antworten vor dem Versand erkennen.3 Min. Lesezeit

Dokumente mit dem Handy als lesbares PDF scannenLegen Sie das Dokument flach hin, fotografieren Sie es mit gleichmäßigem Licht und kontrollieren Sie den erkannten Seitenrand. Prüfen Sie anschließend jede Seite in der gespeicherten PDF-Datei. Ein gerades Blatt ist noch kein scharfes Blatt; Suchbarkeit erfordert gegebenenfalls einen zusätzlichen OCR-Schritt.3 Min. Lesezeit

PowerPoint und PDF umwandeln: Folien richtig prüfenFür eine feste Lesefassung wandeln Sie die Präsentation in PDF um und prüfen jede Folie im Ergebnis. Für weitere Änderungen können Sie PDF-Seiten in eine Präsentation übernehmen, müssen aber die bearbeitbaren Elemente kontrollieren. Animationen, Notizen und die ursprüngliche Gliederung lassen sich aus einem PDF nicht einfach zurückholen.3 Min. Lesezeit

Wasserzeichen in PDF einfügen, ohne Text zu verdeckenFügen Sie einen kurzen Hinweis als Wasserzeichen hinzu und wählen Sie Position, Größe und Deckkraft so, dass der Inhalt lesbar bleibt. Prüfen Sie die heruntergeladene Datei auf allen betroffenen Seitentypen. Ein Wasserzeichen kennzeichnet eine Kopie, verhindert aber weder das Lesen noch zuverlässig jede Weiterverwendung.3 Min. Lesezeit

PDF-Daten dauerhaft schwärzen statt nur überdeckenEine dauerhafte Schwärzung muss den markierten Inhalt entfernen, nicht bloß ein schwarzes Rechteck darüberlegen. Markieren Sie die betreffenden Stellen, wenden Sie die Entfernung an und prüfen Sie den heruntergeladenen Inhalt erneut. Suchen Sie auch nach Wiederholungen sowie Angaben in Kommentaren, Formularfeldern und Metadaten.3 Min. Lesezeit

PDF in PDF/A umwandeln und die Konformität prüfenWählen Sie das verlangte PDF/A-Profil, lassen Sie die Datei umwandeln und kontrollieren Sie das Ergebnis der Formatprüfung. Vergleichen Sie danach Inhalt und Darstellung mit dem Original. Ein PDF/A-Prüfbericht bestätigt die geprüften Formatregeln, nicht die Richtigkeit des Textes oder eine allgemeine Annahmegarantie für jedes Verfahren.3 Min. Lesezeit

PDF lässt sich nicht drucken oder kopieren: Was hilft?Wenn Sie ein PDF lesen können, aber nicht drucken oder kopieren, prüfen Sie zuerst die Dokumentberechtigungen und die genaue Fehlermeldung. Eine solche Beschränkung ist etwas anderes als ein unbekanntes Öffnungspasswort. Bearbeiten Sie nur eine Datei, die Sie verwenden dürfen, und testen Sie die neue Kopie im vorgesehenen Arbeitsablauf.3 Min. Lesezeit

PDF-Seiten neu anordnen und die Reihenfolge speichernOrdnen Sie die Seiten anhand ihrer Inhalte neu und speichern Sie eine eigene Kopie. Prüfen Sie danach jeden Übergang im heruntergeladenen PDF. Die aufgedruckten Seitennummern ändern sich nicht zwingend mit der Position im Dateizähler; auch ein Inhaltsverzeichnis muss anschließend noch passen.3 Min. Lesezeit

Word in PDF umwandeln und die Seiten richtig prüfenWählen Sie das DOCX Dokument bei Word in PDF aus, laden Sie die Ausgabe herunter und prüfen Sie alle Seiten vor dem Versand.5 Min. Lesezeit

JPG in PDF umwandeln: Fotos richtig sortieren und speichernFügen Sie die Fotos bei JPG in PDF hinzu, ordnen Sie die Bilder und kontrollieren Sie die fertigen PDF Seiten vor dem Versand.5 Min. Lesezeit

PDF in JPG oder PNG umwandeln: Seiten und Bilder speichernWählen Sie ganze Seiten oder enthaltene Bilder und speichern Sie die Ausgabe als JPG oder PNG. Prüfen Sie die Bilddateien nach dem Entpacken.5 Min. Lesezeit

PDF teilen und einzelne Seiten extrahierenÖffnen Sie PDF teilen, wählen Sie die benötigten PDF Positionen und laden Sie den geprüften Auszug als eigene Datei herunter.6 Min. Lesezeit

PDF Seiten löschen und die übrigen Blätter behaltenWählen Sie die zu entfernenden PDF Seiten aus und prüfen Sie nach dem Download, ob die verbleibende Fassung vollständig und richtig geordnet ist.5 Min. Lesezeit

PDF Seiten drehen und dauerhaft richtig speichernWählen Sie bei PDF drehen die betroffenen Seiten und die Drehrichtung. Laden Sie die Datei herunter und prüfen Sie die Orientierung erneut.5 Min. Lesezeit

PDF Seitenzahlen einfügen sowie Kopfzeile und Fußzeile ergänzenLegen Sie Startnummer und Seitenbereich fest, wählen Sie eine freie Position und kontrollieren Sie Nummern sowie Kopfzeilen und Fußzeilen im Ergebnis.5 Min. Lesezeit

PDF Passwort entfernen, wenn Sie die Datei öffnen dürfenGeben Sie das bekannte Passwort bei PDF entsperren ein und prüfen Sie die heruntergeladene Kopie erneut. Ein unbekanntes Passwort wird damit nicht erraten.5 Min. Lesezeit

PDF mit Passwort schützen und sicher weitergebenVergeben Sie bei PDF schützen ein eigenes Öffnungspasswort, prüfen Sie den Download und übermitteln Sie das Passwort über einen getrennten bekannten Kanal.5 Min. Lesezeit

Excel in PDF und PDF in Excel umwandeln: Tabellen prüfenWählen Sie die Richtung passend zum Zweck: PDF für feste Leseseiten, Excel für die Weiterarbeit mit Tabellen. Prüfen Sie Zahlen und Zellzuordnungen in beiden Richtungen.5 Min. Lesezeit

PDF bearbeiten: Text ändern, ergänzen und richtig prüfenÖffnen Sie das PDF im Editor und wählen Sie die Bearbeitung passend zum Inhalt. Prüfen Sie anschließend alle Änderungen und bewahren Sie die Originaldatei getrennt auf.5 Min. Lesezeit

PDF in Word umwandeln: Text und Layout richtig prüfenÖffnen Sie das PDF im Konverter, laden Sie die DOCX Datei herunter und vergleichen Sie Text, Tabellen und Seitenumbrüche mit dem Original.5 Min. Lesezeit

Elektronische Signatur: Wann ist sie rechtsgültig?Eine elektronische Signatur ist in Deutschland grundsätzlich wirksam, weil die meisten Verträge an keine Form gebunden sind. Nur wo das Gesetz die Schriftform vorschreibt, ersetzt allein die qualifizierte elektronische Signatur (QES) die Unterschrift auf Papier, und für einige Erklärungen, etwa die Kündigung eines Arbeitsverhältnisses, ist auch sie ausgeschlossen.6 Min. Lesezeit

Eingescannte Unterschrift: Ist sie rechtsgültig?Eine eingescannte Unterschrift ist rechtlich nur eine einfache elektronische Signatur: Sie genügt überall, wo keine Form vorgeschrieben ist oder Textform reicht, aber nie dort, wo das Gesetz die Schriftform verlangt, etwa bei der Befristung eines Arbeitsvertrags oder der Kündigung einer Wohnung.5 Min. Lesezeit

PDF unterschreiben ohne Drucken: So geht esÖffnen Sie das PDF in „PDF unterschreiben“, zeichnen Sie Ihre Unterschrift mit Maus oder Finger, tippen Sie Ihren Namen in einer Handschrift oder laden Sie ein Foto Ihrer Unterschrift hoch, ziehen Sie sie an die richtige Stelle und laden Sie das unterschriebene PDF herunter. Drucker, Scanner und Konto brauchen Sie dafür nicht.6 Min. Lesezeit

Bewerbungsunterlagen in eine PDF-Datei zusammenfügenWandeln Sie zuerst jedes Dokument in ein PDF um, fügen Sie die Dateien in der Reihenfolge Anschreiben, Lebenslauf, Zeugnisse zusammen und verkleinern Sie das Ergebnis, wenn die Stellenanzeige oder das Bewerbungsportal eine Größengrenze nennt.5 Min. Lesezeit

PDF zu groß für die E-Mail? So verkleinern Sie esVerkleinern Sie das PDF mit der Stufe „Empfohlen“: Fotos und Scans darin werden auf etwa 150 DPI gebracht, der Text bleibt scharf, und die Datei wird bei gescannten Dokumenten meist deutlich kleiner. Reicht das nicht, teilen Sie das Dokument und verschicken Sie es in mehreren E-Mails.5 Min. Lesezeit

Kontoauszüge schwärzen fürs Jobcenter: Was ist erlaubt?Bei Ausgaben dürfen Sie Empfänger und Verwendungszweck schwärzen, wenn die Zahlung für Ihren Leistungsanspruch keine Rolle spielt oder sensible Daten verrät, etwa Spenden, Partei- oder Gewerkschaftsbeiträge. Lesbar bleiben müssen die Beträge, alle Einnahmen, die Kontostände und Zahlungen wie Miete, Heizung, Strom, Unterhalt und Versicherungen.5 Min. Lesezeit

En français : les PDF au quotidien

Signer, réduire, fusionner : des réponses claires aux questions que l'on se pose vraiment sur les PDF.

Compresser un PDF sous une taille maximalePour respecter un plafond, choisissez une taille cible plutôt qu’un simple niveau de compression. Vérifiez ensuite le poids réel du fichier téléchargé et la lisibilité des éléments les plus fins. Si le résultat reste trop lourd, reprenez la composition du dossier ou les images sources au lieu de supposer que la limite a été respectée.3 min de lecture

Fusionner plusieurs fichiers PDF dans le bon ordreAjoutez les PDF, fixez leur ordre et vérifiez les transitions dans le fichier fusionné. La réunion des pages ne corrige ni les versions choisies ni les références à une annexe absente. Gardez les originaux séparés, notamment lorsqu’une signature numérique doit rester vérifiable.3 min de lecture

Rendre un PDF scanné recherchable avec l’OCRL’OCR reconnaît les mots d’une image pour rendre un PDF recherchable et sélectionnable. Choisissez la langue du document, puis comparez les mots reconnus avec le scan, surtout les noms et les chiffres. Une couche de texte ne garantit ni une lecture sans erreur ni la reconstruction d’un document entièrement modifiable.3 min de lecture

Créer et remplir un formulaire PDFPour qu’un PDF soit remplissable, ajoutez de vrais champs adaptés aux réponses attendues. Testez le document avec des informations fictives, puis rouvrez le fichier enregistré pour vérifier leur conservation. Une ligne imprimée ou un texte posé sur la page ne remplace pas un champ de formulaire.3 min de lecture

Scanner un document au téléphone et créer un PDF lisiblePosez le document à plat, prenez une image nette et vérifiez les coins détectés avant de l’ajouter au PDF. Rouvrez le fichier enregistré pour contrôler chaque page et son ordre. Le redressement ne remplace pas une bonne mise au point, et un PDF d’images ne devient pas automatiquement recherchable.3 min de lecture

Convertir PowerPoint et PDF : vérifier les diapositivesExportez la présentation en PDF lorsque le destinataire doit lire une version stable des diapositives. Pour retravailler un PDF en présentation, contrôlez les objets obtenus après conversion. Un PDF ne permet pas de retrouver automatiquement les animations, les notes ou les données d’origine des graphiques.3 min de lecture

Ajouter un filigrane à un PDF sans gêner la lectureAjoutez un filigrane court et réglez son emplacement, sa taille et sa transparence pour préserver la lecture. Contrôlez ensuite les différentes pages dans le téléchargement. Le filigrane indique l’usage d’une copie, mais ne supprime pas des données et n’empêche pas toute réutilisation.3 min de lecture

Caviarder un PDF : retirer vraiment les donnéesUn caviardage doit retirer le contenu sélectionné, pas seulement poser un rectangle noir dessus. Appliquez les suppressions, rouvrez la copie et recherchez les informations retirées. Vérifiez aussi les occurrences répétées, les commentaires, les champs et les métadonnées selon les options de nettoyage choisies.3 min de lecture

Convertir un PDF en PDF/A et vérifier le profilChoisissez le profil PDF/A demandé, effectuez la conversion et vérifiez que le fichier obtenu passe la validation correspondante. Comparez aussi son contenu et son aspect avec l’original. La conformité de format ne certifie ni l’exactitude des informations ni l’acceptation du document par toutes les procédures.3 min de lecture

PDF bloqué pour l’impression ou la copie : que vérifier ?Si le PDF s’ouvre mais refuse l’impression ou la copie, relevez le message exact et examinez les permissions du document. Ce problème ne se confond pas avec un mot de passe d’ouverture inconnu ou une page qui n’est qu’une image. Travaillez sur une copie que vous êtes autorisé à utiliser et testez l’action souhaitée après enregistrement.3 min de lecture

Réorganiser les pages d’un PDF et enregistrer l’ordreDéplacez les pages en vous appuyant sur leur contenu, puis enregistrez une nouvelle copie du PDF. Contrôlez chaque transition dans le téléchargement. Les numéros imprimés et les renvois d’un sommaire ne changent pas nécessairement avec la position des pages dans le fichier.3 min de lecture

Convertir Word en PDF : préparer un document prêt à envoyerPour convertir un document Word en PDF, choisissez le fichier DOCX dans le convertisseur et téléchargez le résultat. Ouvrez ensuite le PDF pour vérifier la pagination, les tableaux et les caractères accentués. Gardez le document de travail : les corrections importantes seront plus faciles à faire dans la source.5 min de lecture

Convertir une photo ou un JPG en PDF lisiblePour convertir une photo ou un JPG en PDF, ajoutez les images, vérifiez leur ordre et choisissez une présentation lisible. Contrôlez les bords des documents avant de télécharger le PDF. Transformer une photo en PDF ne rend pas automatiquement son texte sélectionnable et ne corrige pas une prise de vue floue.6 min de lecture

Convertir un PDF en JPG ou PNG : pages et imagesPour convertir un PDF en JPG ou en PNG, choisissez si vous voulez une image de chaque page ou les images contenues dans le document. Téléchargez le résultat puis vérifiez la netteté à la taille d'utilisation. Une capture de page et une photo extraite du PDF ne donnent pas le même contenu.6 min de lecture

Extraire des pages d’un PDF ou le diviser en plusieurs fichiersPour extraire des pages d'un PDF, choisissez les feuilles utiles dans Diviser PDF et créez une nouvelle copie. Vérifiez les numéros dans l'aperçu, car la pagination imprimée peut différer du rang des pages dans le fichier. Gardez le document complet et contrôlez que l'extrait conserve le contexte nécessaire.6 min de lecture

Supprimer une page d’un PDF sans retirer la mauvaise feuillePour supprimer une page d'un PDF, ouvrez l'outil de suppression, repérez la feuille dans l'aperçu et créez une nouvelle copie sans cette page. Vérifiez ensuite le document complet avant de l'envoyer. Retirer une feuille ne supprime pas les informations répétées ailleurs et peut rendre un document signé différent de son original.6 min de lecture

Faire pivoter un PDF et enregistrer les pages dans le bon sensPour remettre un PDF dans le bon sens, choisissez les pages à tourner et enregistrez une nouvelle copie avec Pivoter PDF. Une rotation d'affichage dans un lecteur ne modifie pas toujours le fichier enregistré. Rouvrez le téléchargement pour vérifier que chaque page garde son orientation, y compris sur un autre écran.5 min de lecture

Numéroter les pages d’un PDF avec un en-tête ou un pied de pagePour numéroter les pages d'un PDF, choisissez le format des numéros, leur position et les pages concernées. Un en-tête ou un pied de page peut aussi identifier le dossier, sans remplacer les numéros d'origine des justificatifs. Vérifiez les marges pour ne pas recouvrir une note, une signature ou une information utile.5 min de lecture

Enlever le mot de passe d’un PDF que vous pouvez ouvrirPour enlever le mot de passe d'un PDF, ouvrez Déverrouiller PDF et saisissez le mot de passe d'ouverture lorsqu'il est demandé. Si le fichier s'ouvre mais limite seulement certaines actions, la situation est différente. Travaillez uniquement sur un document que vous êtes autorisé à utiliser et vérifiez la copie obtenue avant de la partager.5 min de lecture

Protéger un PDF avec un mot de passe et régler les autorisationsPour protéger un PDF, ajoutez un mot de passe d'ouverture puis choisissez les autorisations utiles au lecteur. Vérifiez le résultat en le rouvrant avec le code. Le mot de passe protège l'accès au fichier, mais il ne retire pas les données sensibles et n'empêche pas un lecteur autorisé de recopier ce qu'il voit.5 min de lecture

Convertir Excel en PDF ou récupérer un tableau PDF dans ExcelConvertir Excel en PDF sert à envoyer un tableau dont la présentation doit rester fixe ; convertir un PDF en Excel sert à reprendre ses données. Choisissez le sens de conversion selon ce que vous voulez faire, puis vérifiez les colonnes et les montants. Le retour vers une feuille de calcul ne reconstitue pas automatiquement les formules du classeur d'origine.6 min de lecture

Modifier le texte d’un PDF sans confondre ajout et correctionPour modifier le texte d'un PDF, ouvrez une copie dans l'éditeur, sélectionnez le passage concerné puis contrôlez le fichier téléchargé. Ajouter une zone de texte, corriger un texte existant et supprimer une information confidentielle sont des opérations différentes. Si vous devez réécrire plusieurs pages, retrouvez de préférence le document source avant de commencer.6 min de lecture

Convertir un PDF en Word sans perdre le fil du documentConvertissez le PDF en DOCX, puis relisez les paragraphes et les tableaux avant de modifier le document.6 min de lecture

Signature électronique : quelle valeur juridique en France ?Oui, elle est valable. Le Code civil donne à l'écrit électronique la même force probante que le papier (article 1366) et admet la signature électronique dès qu'elle repose sur un procédé fiable d'identification (article 1367). Seule la signature qualifiée est présumée fiable : avec une signature simple ou avancée, c'est à celui qui s'en prévaut de prouver sa fiabilité si elle est contestée.6 min de lecture

Une signature scannée est-elle valable ?Une signature scannée n'est pas une signature électronique au sens du Code civil, mais elle n'est pas sans valeur : en 2022, la Cour de cassation a jugé qu'elle ne vaut pas absence de signature quand il est établi qu'elle émane bien de la personne habilitée à signer. En cas de contestation, elle reste fragile, car l'image seule ne prouve pas qui l'a apposée.5 min de lecture

Signer un PDF sans l'imprimer : la méthode simpleOuvrez le PDF dans un outil de signature en ligne, dessinez votre signature au doigt ou à la souris (ou importez une photo de votre signature sur papier), placez-la sur la page, ajoutez la date et téléchargez le fichier signé. Pas d'imprimante, pas de scanner, et le document reste un PDF propre à renvoyer par e-mail.6 min de lecture

PDF trop lourd : comment réduire sa taille en Mo ?Passez le PDF dans un outil de compression : les photos et les scans qu'il contient sont allégés, le texte reste net. Si un site impose une limite (2 Mo, par exemple), choisissez une taille maximale plutôt qu'un niveau de compression : les images sont réduites juste assez pour passer sous la limite.5 min de lecture

Dossier de location : tout réunir en un seul PDFTransformez les photos de vos pièces en PDF, fusionnez tous les fichiers dans l'ordre attendu, ajoutez un filigrane sur la copie de votre pièce d'identité, puis compressez le résultat s'il dépasse la taille acceptée. Vous envoyez un seul fichier, propre et facile à lire pour le propriétaire ou l'agence.5 min de lecture

Mettre un filigrane sur sa carte d'identitéAjoutez sur la copie un texte en filigrane qui dit à qui elle est destinée, pour quoi et à quelle date (par exemple « Copie destinée à l'agence X pour une location, le 10/10/2026 »), semi-transparent et répété en travers de toute la page. Une copie ainsi marquée est bien plus difficile à réutiliser pour une usurpation d'identité.5 min de lecture

En español: los PDF del día a día

Firmar, reducir, unir: respuestas claras a las dudas sobre PDF que surgen en el día a día.

Comprimir un PDF hasta un tamaño máximoUsa una meta de tamaño cuando el formulario fija un máximo para el PDF. Después comprueba los bytes del archivo descargado y la legibilidad de la letra pequeña. Si la herramienta indica que no ha alcanzado la meta, revisa los documentos o las imágenes de origen antes de dar el archivo por válido para la subida.3 min de lectura

Firmar un PDF sin imprimir: qué copia enviarPara añadir una firma visible, abre el PDF, coloca el trazo donde corresponda y comprueba la copia descargada. Si el destinatario exige un certificado o un procedimiento concreto, confirma ese requisito antes de finalizar. Una imagen de firma no demuestra por sí sola que el archivo contenga una firma digital verificable.3 min de lectura

Poner una marca de agua en un PDF sin tapar el textoAñade una marca breve y ajusta su tamaño, posición y transparencia para que el documento siga siendo legible. Comprueba el archivo descargado en páginas con contenidos distintos. La marca identifica una copia, pero no elimina información ni impide por sí sola que alguien la reproduzca.3 min de lectura

Convertir un PDF a PDF/A y validar el archivoConvierte el documento al perfil PDF/A solicitado y comprueba que la validación corresponde a ese perfil. Después revisa que páginas, texto y anexos sigan siendo correctos. Superar la comprobación del formato no certifica la exactitud de los datos ni garantiza que cualquier trámite acepte el archivo.3 min de lectura

PDF bloqueado para imprimir o copiar: qué comprobarSi puedes abrir el PDF pero no imprimir o copiar, revisa el mensaje exacto y los permisos del documento. No es lo mismo que desconocer la contraseña de apertura o encontrarte una página que solo contiene una imagen. Trabaja con una copia que tengas derecho a usar y prueba la acción necesaria después de descargarla.3 min de lectura

Ordenar páginas de un PDF y guardar la nueva secuenciaMueve las páginas según su contenido y guarda una copia con el orden definitivo. Después comprueba cada transición en el archivo descargado. Los números impresos y las referencias de un índice no cambian necesariamente al desplazar las hojas dentro del PDF.3 min de lectura

Cómo convertir Word a PDF sin mover la páginaPara convertir Word a PDF, carga el documento, revisa el tamaño de papel y descarga la versión final. Abre el PDF antes de enviarlo para comprobar fuentes, tablas y saltos de página. La conversión fija la presentación, pero no firma el documento ni corrige su contenido.5 min de lectura

Cómo convertir fotos JPG a PDF y ordenar las hojasPara convertir fotos JPG a PDF, añade las imágenes, coloca cada una en el orden correcto y elige la distribución de las páginas. Comprueba que no se corten bordes ni texto antes de descargar. Un PDF hecho con fotografías sigue siendo imagen si no se reconoce su texto después.5 min de lectura

Cómo convertir PDF a JPG o PNG y elegir la calidadConvierte PDF a JPG para compartir páginas como imágenes y elige PNG cuando quieras conservar bordes y texto sin la compresión propia del JPG. Comprueba qué páginas exportas y la resolución disponible antes de descargar. Una imagen de una hoja no conserva formularios, enlaces ni firmas digitales verificables del PDF.5 min de lectura

Cómo eliminar páginas de un PDF sin quitar la hoja equivocadaPara eliminar páginas de un PDF, selecciona las hojas que sobran, genera una copia y revisa el documento completo. Comprueba la posición real de la página, no solo el número impreso sobre ella. Conserva el original, sobre todo si contiene firmas o forma parte de un expediente.5 min de lectura

Cómo girar páginas de un PDF y guardar la orientaciónPara girar páginas de un PDF, selecciona las hojas de lado y aplica la rotación antes de guardar una copia. Girar solo la vista de un lector puede no cambiar el archivo. Reabre la descarga y comprueba cada orientación, especialmente en documentos que mezclan tablas y páginas verticales.5 min de lectura

Cómo numerar páginas de un PDF y añadir encabezado o pieNumera un PDF después de ordenar sus páginas y decidir si la portada cuenta. Coloca los números donde no tapen texto y utiliza encabezado o pie para una referencia breve del documento. Revisa las páginas horizontales y la última hoja antes de compartir la copia.5 min de lectura

Cómo quitar la contraseña de un PDF que puedes abrirPuedes quitar la contraseña de un PDF propio o autorizado cuando conoces la clave necesaria para abrirlo. Introduce esa clave, genera una copia sin contraseña y prueba que se abra sin pedirla. La herramienta no recupera una contraseña olvidada ni convierte una restricción de permisos en autorización para usar contenido ajeno.5 min de lectura

Cómo poner contraseña a un PDF y controlar sus permisosPara poner contraseña a un PDF, establece una clave de apertura y revisa los permisos antes de descargar la copia cifrada. Comparte la clave por un canal distinto del archivo y prueba que la copia realmente la pide. Los permisos de copiar o imprimir no sustituyen al cifrado ni eliminan datos personales.5 min de lectura

Cómo convertir Excel a PDF y recuperar tablas de PDF a ExcelConvertir Excel a PDF sirve para entregar una tabla con páginas fijas; convertir PDF a Excel busca recuperar datos en celdas. Son operaciones distintas y requieren comprobaciones diferentes. En la salida PDF revisa columnas y letra; en la hoja de cálculo, revisa valores, filas y fórmulas antes de calcular.5 min de lectura

Cómo convertir PowerPoint a PDF para entregar las diapositivasPara convertir PowerPoint a PDF, selecciona la presentación y genera una copia estática de sus diapositivas. Revisa las fuentes, los bordes y el orden en la descarga, especialmente si hay gráficos o texto pequeño. El PDF permite entregar las páginas, pero no reproduce una exposición con animaciones, audio o vídeo.7 min de lectura

Cómo crear un PDF rellenable con campos que se guardanPara crear un PDF rellenable, coloca campos reales sobre el documento y guarda una copia que conserve esos campos. Puedes preparar textos, casillas y opciones según la pregunta que quieras hacer. Antes de distribuirlo, rellena una prueba, guarda el archivo y vuelve a abrirlo para comprobar que las respuestas permanecen.7 min de lectura

Cómo verificar una firma electrónica e.firma en MéxicoRevisa el PDF original con Verificar firma de PDF y comprueba por separado la integridad, el certificado y los cambios posteriores. La e.firma puede utilizarse en procesos que no entregan una firma incorporada al PDF. El resultado técnico del archivo no sustituye los requisitos del trámite mexicano que lo recibe.6 min de lectura

Cómo convertir PDF a Word y revisar el resultadoConvierte el PDF a DOCX y revisa los párrafos, las tablas y los saltos antes de editar y entregar el documento.6 min de lectura

¿Es válida la firma electrónica en España? Tipos y leySí. Por el Reglamento eIDAS y la Ley 6/2020, ningún juez puede negar efectos a una firma solo por ser electrónica, y la firma electrónica cualificada equivale a la manuscrita. Lo que cambia entre los tres tipos es lo fácil que resulta probarla si alguien la discute.6 min de lectura

¿Es válida una firma escaneada? Lo que dice la ley en EspañaPuede serlo: ninguna ley española prohíbe firmar con la imagen escaneada de tu firma, y la mayoría de contratos valen sea cual sea su forma. El punto débil es la prueba: una imagen se copia en segundos, así que si la otra parte niega haber firmado, te tocará demostrarlo con otros medios.6 min de lectura

Cómo firmar un PDF con certificado digital (FNMT) onlineHaz una copia de tu certificado en un archivo .pfx o .p12 protegido con contraseña, súbelo junto al PDF a una herramienta de firma digital y descarga el documento firmado. La firma queda dentro del PDF y cualquiera puede comprobar quién firmó y que nada ha cambiado desde entonces.5 min de lectura

Cómo reducir el tamaño de un PDF para enviarlo por correoComprime el PDF: así se reducen las imágenes y los escaneos que lleva dentro, que son lo que más pesa, mientras el texto sigue nítido. Si te piden un límite exacto, como 1 MB o 2 MB, indica ese tamaño y la herramienta ajusta las imágenes hasta que el archivo quepa.6 min de lectura

Cómo separar las hojas de un PDF en varios archivosAbre el PDF en una herramienta para dividir PDF y elige entre sacar solo las páginas que indiques (por ejemplo 1-3, 7) o separar cada página en un archivo propio. El original no cambia y descargas los archivos nuevos.5 min de lectura

Cómo tachar datos personales en un PDF (y que no se vean)No basta con poner un recuadro negro encima: si el texto sigue debajo, cualquiera puede copiarlo. Usa una herramienta de censura que elimine del archivo el texto y las imágenes que quedan bajo cada marca, revisa el resultado y envía solo la copia censurada.6 min de lectura

Cómo convertir un PDF de oficio a carta sin que se corteAbre el PDF en una herramienta para cambiar el tamaño de las páginas, elige Carta y deja la opción de mantener proporciones. Cada página oficio se reduce lo justo para caber completa en la hoja carta, centrada y con un margen blanco a los lados, sin cortar nada ni deformar las letras.6 min de lectura

Cómo convertir un PDF a tamaño A4 (o de A4 a carta)Abre el PDF en una herramienta para cambiar el tamaño de las páginas, elige A4 o Carta según lo que te pidan y deja la opción de mantener proporciones. Cada página se ajusta a la hoja nueva sin deformarse: de carta a A4 quedan márgenes finos arriba y abajo, y de A4 a carta, a los lados.6 min de lectura

Cómo mejorar un PDF escaneado borroso o que se ve malPásalo por una herramienta que mejore escaneos: subir el contraste, enfocar y pasar a blanco y negro deja el fondo blanco y las letras negras y nítidas. Lo que no puede hacer es recuperar detalle que el escáner o la cámara nunca captaron; si la imagen está movida, conviene volver a escanear.5 min de lectura

Cómo extraer el texto de un PDF escaneado y copiarloÁbrelo en una herramienta de PDF a texto con reconocimiento de caracteres (OCR): las páginas escaneadas se leen solas y el texto aparece página por página, listo para copiar o descargar como archivo .txt. Revisa los números y nombres, porque el reconocimiento puede equivocarse.6 min de lectura

Cómo juntar varios PDF en uno solo, también en el celularAbre una herramienta para unir PDF, añade los archivos, ponlos en el orden que quieras y descarga el resultado. Obtienes un solo PDF con todas las páginas de todos los archivos, en ese orden, y los originales no cambian. Si tienes fotos, conviértelas antes a PDF.7 min de lectura

Cómo escanear documentos con el celular y guardarlos en PDFAbre un escáner en el celular, toma una foto de cada hoja y deja que encuentre los bordes, la enderece y la limpie; luego guarda todas las páginas en un solo PDF. Si ya tienes las fotos en la galería, conviértelas a PDF con una herramienta de imagen a PDF.7 min de lectura

In italiano: i PDF di tutti i giorni

Firmare, comprimere, unire: risposte chiare ai dubbi sui PDF che capitano davvero ogni giorno.

Comprimere un PDF entro una dimensione massimaImposta una dimensione obiettivo quando il caricamento richiede un massimo preciso. Controlla poi il peso effettivo del download e la leggibilità delle informazioni più piccole. Se la soglia non viene raggiunta, rivedi immagini e composizione del documento prima di considerare la copia pronta per l’invio.3 min di lettura

Unire più file PDF e controllare il fascicolo finaleAggiungi i file PDF, scegli la sequenza e controlla ogni passaggio nella copia unita. La fusione non corregge una versione sbagliata e non riconosce da sola tutti gli allegati ripetuti. Mantieni separati gli originali, soprattutto quando una firma digitale deve restare verificabile.3 min di lettura

Rendere un PDF scansionato ricercabile con l’OCRL’OCR riconosce le parole delle immagini per rendere un PDF ricercabile e selezionabile. Scegli la lingua del documento e confronta il risultato con la scansione, soprattutto nomi e cifre. Una parte testuale non garantisce l’assenza di errori e non ricostruisce da sola un documento interamente modificabile.3 min di lettura

Creare e compilare un modulo PDFUn modulo PDF compilabile richiede veri campi adatti alle risposte. Provalo con dati fittizi e riapri il file salvato per verificare che testo e scelte siano rimasti corretti. Una linea stampata o una nota sovrapposta alla pagina non sostituisce un campo interattivo.3 min di lettura

Scansionare documenti con il telefono e salvarli in PDFAppoggia il foglio in piano, acquisisci un’immagine nitida e controlla i quattro angoli prima di salvare. Riapri il PDF scaricato per verificare tutte le pagine e la sequenza. Il ritaglio non corregge la messa a fuoco e un PDF di immagini non diventa automaticamente ricercabile.3 min di lettura

Convertire PowerPoint e PDF: controllare le diapositiveConverti la presentazione in PDF quando serve una copia stabile da leggere. Se invece parti da un PDF per modificare le diapositive, controlla gli elementi ricostruiti nella nuova presentazione. Dal PDF non si recuperano automaticamente animazioni, note e dati originali dei grafici.3 min di lettura

Come aggiungere una filigrana a un PDFInserisci una scritta breve e regola posizione, dimensione e trasparenza per mantenere leggibile il documento. Controlla il download su pagine con contenuti diversi. La filigrana identifica la copia, ma non elimina informazioni né impedisce ogni riutilizzo di ciò che resta visibile.3 min di lettura

PDF bloccato per stampa o copia: cosa controllareSe il PDF si apre ma non permette stampa o copia, controlla il messaggio e i permessi del documento. È diverso da una password di apertura sconosciuta o da una pagina composta soltanto da un’immagine. Elabora una copia che puoi usare e prova la funzione necessaria dopo il download.3 min di lettura

Riordinare le pagine di un PDF e salvare l’ordineSposta le pagine riconoscendone il contenuto e salva una copia con l’ordine definitivo. Apri il download e controlla ogni passaggio modificato. La numerazione stampata e i riferimenti dell’indice non cambiano necessariamente quando i fogli assumono una posizione diversa nel file.3 min di lettura

Convertire Word in PDF senza spostare il testoPer convertire Word in PDF, carica il DOCX, scarica il risultato e confronta le interruzioni di pagina con il documento di partenza. Correggi nel DOCX eventuali righe spostate, poi ripeti la conversione. Conserva entrambe le versioni: il PDF serve per la consegna, il DOCX per le modifiche.3 min di lettura

Convertire PDF in Word: testo, scansioni e impaginazioneConverti il PDF in DOCX se devi riscriverne il testo e non hai il documento originale. Se la pagina è una scansione, serve prima il riconoscimento del testo. Nel risultato controlla ordine dei paragrafi, tabelle e note: l’aspetto del PDF non garantisce una struttura modificabile identica.3 min di lettura

Convertire foto JPG in PDF: ordine, margini e qualitàPer trasformare foto JPG in PDF, seleziona le immagini, mettile nell’ordine di lettura e scegli una pagina che non tagli il documento. Controlla bordi, orientamento e scritte piccole nel PDF scaricato. La conversione raccoglie le foto, ma non corregge una messa a fuoco sbagliata.3 min di lettura

Convertire PDF in JPG o PNG: pagine e immaginiEsporta il PDF in JPG o PNG quando ti serve un’immagine dell’intera pagina. Se cerchi solo una foto contenuta nel documento, scegli l’estrazione delle immagini quando disponibile. Il JPG è spesso pratico per fotografie, mentre il PNG evita gli artefatti tipici della compressione JPG su scritte e grafici.3 min di lettura

Dividere un PDF ed estrarre solo le pagine che servonoPer dividere un PDF, scegli se separare il fascicolo in più file o estrarre alcune pagine in una sola copia. Usa la posizione delle pagine nel PDF, che può differire dal numero stampato sul foglio. Apri ciascun risultato e controlla contenuto e ordine prima di inviarlo.3 min di lettura

Eliminare pagine da un PDF senza togliere quelle giustePer eliminare pagine da un PDF, seleziona i fogli da rimuovere, crea una nuova copia e verifica quelli rimasti. Guarda il contenuto delle miniature, perché i numeri stampati possono essere diversi dalle posizioni del file. Tieni l’originale completo, soprattutto se contiene firme o documenti emessi da altri.3 min di lettura

Ruotare pagine PDF e salvare il verso correttoPer ruotare un PDF in modo permanente, scegli le pagine, applica la rotazione e scarica il documento modificato. Riapri il download per verificare che il verso sia stato salvato. Ruotare soltanto la vista del lettore può lasciare il file originale invariato.3 min di lettura

Numerare pagine PDF con intestazione e piè di paginaPer numerare un PDF, scegli posizione, numero iniziale e pagine interessate, poi controlla la copia scaricata. Un’intestazione o un piè di pagina può aggiungere il riferimento del fascicolo senza riscriverne il testo. Lascia liberi timbri, firme e numerazioni originali utili a identificare i documenti.3 min di lettura

Proteggere un PDF con password: apertura e permessiUna password di apertura limita l’accesso al PDF a chi conosce la chiave scelta. I permessi di stampa e copia hanno una funzione diversa e dipendono anche dal lettore utilizzato. Proteggi una copia, riaprila con la password e comunica la chiave su un canale separato dal documento.3 min di lettura

Togliere la password a un PDF che puoi aprirePuoi togliere la password da un PDF che sei autorizzato a usare fornendo la chiave quando richiesta. Salva la copia e riaprila per verificare che non chieda più la password. Una password di apertura sconosciuta non equivale a una semplice restrizione di stampa o modifica.3 min di lettura

Excel e PDF: esportare fogli e recuperare tabellePer consegnare un prospetto leggibile, converti Excel in PDF e controlla che tutte le colonne entrino nelle pagine. Per lavorare sui numeri di un PDF, estrai la tabella in Excel e verifica valori e tipi di cella. Il PDF conserva il risultato visibile, ma non permette di recuperare con certezza le formule originali.3 min di lettura

Modificare il testo di un PDF: correzione o aggiunta?Per modificare il testo di un PDF, verifica prima se la pagina contiene testo reale o una scansione. Correggere parole esistenti è diverso dall’aggiungere una casella sopra la pagina. Quando possiedi il documento originale, modificarlo e generare un nuovo PDF mantiene più facilmente coerenti testo e impaginazione.3 min di lettura

Firma digitale e firma elettronica: qual è la differenza?La firma digitale è un tipo di firma elettronica: è la firma elettronica qualificata italiana, basata su un certificato qualificato e su una coppia di chiavi crittografiche. "Firma elettronica" invece è la famiglia intera, che va dal nome scritto in fondo a una email fino alla firma digitale.6 min di lettura

Firma scansionata: ha valore legale? Quando è validaUna firma scansionata incollata in un documento digitale è di solito una firma elettronica semplice: ha valore, ma è il giudice a decidere quanto pesa in caso di contestazione (art. 20, comma 1-bis, CAD), e non basta per gli atti che la legge vuole firmati con firma qualificata o digitale.6 min di lettura

Come firmare un PDF senza stamparlo, da PC o telefonoApri il PDF in Firma PDF, disegna la firma con il mouse o con il dito, oppure digitala o caricala da una foto, trascinala al suo posto e scarica il file: niente stampa, niente scanner, niente account, e funziona allo stesso modo su PC, iPhone e Android.6 min di lettura

PDF troppo pesante per email o PEC: come ridurloComprimi il PDF scegliendo "A una dimensione" e scrivi il limite che ti hanno dato (per esempio 2048 KB per 2 MB): le immagini vengono ridotte solo quanto serve, il testo resta nitido; se il file resta troppo grande, dividilo in più parti.5 min di lettura

PDF/A: cos'è e come convertire un PDF in PDF/AIl PDF/A è un PDF fatto per restare leggibile per decenni: contiene dentro di sé tutto quello che serve per mostrarlo, come i caratteri, e non può dipendere da script, file esterni o password. Per convertire un PDF scegli la versione che ti chiedono (se nessuno lo specifica, PDF/A-2b) e controlla che il file superi la verifica.6 min di lettura

Come oscurare dati sensibili in un PDF (davvero)Per oscurare davvero un dato in un PDF non basta coprirlo con un rettangolo nero, perché il testo sotto resta nel file e si può copiare: serve uno strumento di oscuramento che rimuova testo, immagini e informazioni nascoste sotto ogni segno, come Oscura PDF.6 min di lettura

Firma CAdES o PAdES: differenze tra file P7M e PDF firmatoCAdES e PAdES sono due formati della stessa firma digitale. Con CAdES il documento viene chiuso in una busta e diventa un file .p7m; con PAdES la firma sta dentro il PDF, che resta un .pdf. A parità di certificato hanno lo stesso valore: cambiano il modo di aprirli, di verificarli e quello che accetta chi li riceve.5 min di lettura

In het Nederlands: pdf's in de praktijk

Ondertekenen, verkleinen, samenvoegen: heldere antwoorden op de pdf-vragen die je echt tegenkomt.

PDF verkleinen tot onder een bestandslimietKies een doelgrootte als een upload een vaste bestandslimiet heeft. Controleer daarna de werkelijke grootte van de download en de kleinste belangrijke tekst. Is het doel niet gehaald, pas dan de samenstelling of de bronbeelden aan voordat je de kopie als geschikt voor de upload beschouwt.3 min leestijd

PDF-bestanden samenvoegen en de volgorde controlerenVoeg de bestanden toe, kies de leesvolgorde en controleer de samengevoegde download op de overgangen. Het samenvoegen herstelt geen verkeerde versie en voorkomt niet vanzelf dubbele bijlagen. Bewaar de afzonderlijke originelen, zeker als een digitale handtekening controleerbaar moet blijven.3 min leestijd

Gescande PDF doorzoekbaar maken met OCROCR herkent woorden in een afbeelding en kan een scan doorzoekbaar en selecteerbaar maken. Kies de taal van het document en vergelijk het resultaat met de zichtbare pagina. Een tekstlaag garandeert geen foutloze bedragen en bouwt niet vanzelf een volledig bewerkbaar tekstdocument op.3 min leestijd

Document scannen met je telefoon en opslaan als PDFLeg het papier vlak, maak een scherpe opname en controleer de vier paginahoeken voordat je opslaat. Open daarna de gedownloade PDF om iedere pagina en de volgorde te beoordelen. Een rechte uitsnede herstelt geen onscherpe letters en maakt afbeeldingspagina’s niet vanzelf doorzoekbaar.3 min leestijd

Watermerk aan een PDF toevoegen zonder tekst te bedekkenVoeg een korte aanduiding toe en kies grootte, plaats en doorzichtigheid zodat de pagina leesbaar blijft. Bekijk verschillende paginatypen in de gedownloade kopie. Een watermerk geeft de status van een versie aan, maar verwijdert geen gegevens en voorkomt niet elke vorm van hergebruik.3 min leestijd

Gegevens in een PDF definitief zwart makenDefinitief zwart maken vereist dat de gemarkeerde inhoud uit de PDF wordt verwijderd. Pas de bewerking toe, open de download en zoek de verwijderde gegevens opnieuw. Controleer ook herhalingen, opmerkingen, formuliervelden en metadata volgens de gekozen opschoonopties.3 min leestijd

PDF omzetten naar PDF/A en het profiel controlerenKies het gevraagde PDF/A-profiel, zet het document om en controleer of de uitvoer voor dat profiel is gevalideerd. Vergelijk ook inhoud en weergave met het origineel. Formaatconformiteit bewijst niet dat de gegevens juist zijn of dat elke procedure dit bestand accepteert.3 min leestijd

PDF afdrukken of kopiëren geblokkeerd: wat nu?Kun je een PDF lezen maar niet afdrukken of kopiëren, bekijk dan de precieze melding en documentrechten. Dat is iets anders dan een onbekend openingswachtwoord of een pagina die alleen een afbeelding bevat. Werk met een toegestane kopie en test de benodigde handeling na het downloaden.3 min leestijd

PDF-pagina’s opnieuw ordenen en de volgorde opslaanVerplaats de pagina’s op basis van hun inhoud en bewaar een kopie in de definitieve volgorde. Bekijk elke gewijzigde overgang in de download. Gedrukte paginanummers en verwijzingen in een inhoudsopgave veranderen niet noodzakelijk mee met de positie van de bladen.3 min leestijd

Foto’s omzetten naar pdf: volgorde en leesbaarheid controlerenMaak van foto's een pdf door de afbeeldingen te kiezen, de volgorde vast te zetten en het papierformaat te controleren. Kijk daarna alle pagina's na, vooral de randen en kleine letters. Een foto in een pdf wordt daardoor nog geen doorzoekbaar document en evenmin een gewaarmerkte kopie.5 min leestijd

PDF omzetten naar JPG of PNG: welk formaat kies je?Zet een pdf pagina om naar JPG voor een gewone afbeelding en kies PNG wanneer scherpe lijnen en tekst belangrijk zijn. Selecteer alleen de pagina's die je nodig hebt en controleer het gedownloade beeld op de grootte waarop je het gaat gebruiken. Een afbeelding bevat niet dezelfde bewerkbare tekst en ondertekening als het oorspronkelijke pdf bestand.5 min leestijd

PDF splitsen en losse pagina’s opslaanSplits een pdf wanneer je een paginabereik wilt bewaren of verschillende onderdelen als losse bestanden wilt versturen. Kies de pagina's op basis van hun plaats in het bestand en controleer iedere uitvoer. Het oorspronkelijke document blijft je referentie, vooral als er een digitale handtekening of een officieel bewijsstuk in staat.5 min leestijd

Een pdf pagina verwijderen zonder de rest te veranderenVerwijder een pdf pagina door het betreffende blad in de verwijdertool te kiezen en een nieuwe kopie op te slaan. Controleer de pagina's vóór en na de verwijderde positie. Een pagina weglaten is niet hetzelfde als informatie binnen een overblijvende pagina veilig wissen.5 min leestijd

PDF pagina’s draaien en blijvend recht opslaanDraai de verkeerde pagina's in de pdf zelf en download daarna een nieuwe kopie. Controleer de kopie door haar opnieuw te openen, zodat je weet dat de wijziging is opgeslagen. Een hele pagina draaien helpt bij een kwartslag of ondersteboven beeld, maar maakt een scheef gefotografeerde bladzijde niet recht van perspectief.5 min leestijd

Paginanummers, koptekst en voettekst in een pdf zettenVoeg paginanummers toe om een langer pdf bestand beter te kunnen bespreken en ordenen. Gebruik een koptekst of voettekst voor een korte titel of andere vaste aanduiding, en controleer de positie op iedere soort pagina. Nummering verandert de inhoud niet vanzelf in een officieel geregistreerd dossier en mag bestaande tekst niet bedekken.5 min leestijd

Wachtwoord van een pdf verwijderen die je mag openenVerwijder een pdf wachtwoord alleen wanneer je het bestand mag verwerken en het benodigde openingswachtwoord kent. Een bestand dat zonder wachtwoord opent maar afdrukken blokkeert, heeft een andere soort beperking. Sla de ontgrendelde kopie bewust op, want zij heeft niet meer dezelfde toegangsbeveiliging als het origineel.5 min leestijd

Een pdf beveiligen met een wachtwoordBeveilig een pdf met een openingswachtwoord als de inhoud niet zonder dat wachtwoord gelezen mag worden. Kies daarnaast bewust eventuele beperkingen voor afdrukken of kopiëren, maar behandel die niet als een sluitende beveiliging tegen verdere verspreiding. Test de gedownloade pdf en deel het wachtwoord apart van het bestand.5 min leestijd

Excel en pdf omzetten zonder tabellen uit het oog te verliezenMaak van een spreadsheet een pdf voor een vaste leesversie en zet een pdf tabel om naar een spreadsheet als je de waarden verder wilt bewerken. Dit zijn twee verschillende conversierichtingen. Controleer bij uitvoer naar pdf de kolommen en paginaovergangen, en bij uitvoer naar een werkmap vooral getallen, celindeling en berekeningen.5 min leestijd

PowerPoint naar pdf omzetten en iedere dia controlerenZet een presentatie om naar pdf als je de dia's in een vaste leesversie wilt delen. Kies het presentatiebestand bij PowerPoint naar PDF en controleer na de omzetting alle pagina's. Beweging, gesproken uitleg en een stapsgewijze onthulling van tekst kun je niet op dezelfde manier overbrengen in een stilstaande pdf.6 min leestijd

Een invulbaar pdf formulier maken en testenMaak een pdf invulbaar door echte formuliervelden toe te voegen boven de plaatsen waar iemand gegevens moet invullen. Controleer de voorgestelde velden, geef ze een duidelijke naam en probeer het formulier uit voordat je het downloadt. Test daarna een ingevulde kopie die je opslaat en opnieuw opent, want een nette lege pagina bewijst nog niet dat antwoorden goed worden bewaard.7 min leestijd

Word naar pdf omzetten en de opmaak controlerenKies je DOCX bestand in Word naar PDF, download de pdf en controleer alle pagina’s voordat je het bestand verstuurt.6 min leestijd

Is een digitale handtekening rechtsgeldig in Nederland?Ja. Volgens artikel 3:15a BW heeft een elektronische handtekening dezelfde rechtsgevolgen als een handgeschreven handtekening, als de manier van ondertekenen betrouwbaar genoeg is voor het doel. Een gekwalificeerde handtekening staat er altijd mee gelijk, en ook een gescande handtekening telt mee, al bewijst die het minst.7 min leestijd

PDF ondertekenen zonder printen: zo zet je je handtekeningOpen de PDF in PDF ondertekenen, teken je handtekening met muis of vinger (of typ hem, of upload een foto ervan), sleep hem naar de juiste plek, sla op en download het bestand. Printen en scannen is niet nodig, en een account ook niet.6 min leestijd

PDF verkleinen in MB: te groot voor mail of uploadenOpen PDF comprimeren, kies Aanbevolen voor een gewone verkleining of Tot een grootte als je onder een vaste grens moet blijven, zoals 1 MB, en download het kleinere bestand. De tekst blijft scherp; alleen de afbeeldingen worden kleiner gemaakt.6 min leestijd

Cv en motivatiebrief in één PDF: zo voeg je ze samenSla je motivatiebrief en je cv allebei op als PDF, open PDF samenvoegen, zet de brief bovenaan en het cv eronder, en download het samengevoegde bestand. Geef het een naam met je eigen naam erin en controleer de grootte voordat je uploadt.5 min leestijd

Veilige kopie van je ID: BSN zwart maken in een PDFMaak van de foto van je identiteitsbewijs een PDF, lak het burgerservicenummer zwart (ook in de cijferreeks onderaan) met een tool die het echt uit het bestand verwijdert, en zet op de kopie dat het een kopie is, voor wie en de datum. Een werkgever heeft wel een volledige kopie nodig.6 min leestijd

PDF naar Word omzetten en bewerken: zo houd je de opmaakUpload je PDF in PDF naar Word en open het .docx-bestand in Word: de tekst staat in tekstvakken op dezelfde plek als in de PDF, met tabellen als echte Word-tabellen. Is de PDF gescand, laat de tekst dan eerst herkennen met OCR PDF; wil je alleen een typfout aanpassen, bewerk de PDF dan direct.6 min leestijd

Em português: PDF no dia a dia

Assinar, reduzir, juntar: respostas claras para as dúvidas de PDF que aparecem no dia a dia.

Comprimir PDF até um tamanho máximo de arquivoUse uma meta de tamanho quando o envio exigir um limite para o PDF. Confira depois o peso real do arquivo baixado e a leitura dos detalhes importantes. Se a meta não for atingida, revise as imagens ou a composição do documento antes de considerar a cópia pronta para enviar.3 min de leitura

Juntar arquivos PDF e conferir a ordem das páginasAdicione os PDFs, defina a ordem e abra o arquivo unido para conferir cada passagem entre documentos. A junção não corrige uma versão errada nem evita anexos repetidos por conta própria. Guarde as peças originais separadas, principalmente quando uma assinatura digital precisar continuar verificável.3 min de leitura

Escanear documento pelo celular e salvar um PDF legívelColoque a folha em uma superfície plana, capture com boa nitidez e confira os quatro cantos antes de salvar. Abra o PDF baixado para revisar cada página e a ordem do conjunto. O recorte não corrige falta de foco, e reunir imagens em PDF não cria automaticamente texto pesquisável.3 min de leitura

Colocar marca-d’água no PDF sem atrapalhar a leituraInsira uma marca curta e ajuste posição, tamanho e transparência para manter o conteúdo legível. Abra a cópia baixada e confira páginas com tipos de conteúdo diferentes. A marca identifica a versão, mas não elimina dados nem impede toda reprodução do que continua visível.3 min de leitura

Ocultar dados no PDF de forma definitivaOcultar de forma definitiva exige retirar o conteúdo marcado, não apenas desenhar uma faixa preta sobre ele. Aplique a remoção, abra o download e procure novamente os dados retirados. Confira também outras ocorrências, campos, comentários e metadados conforme as opções de limpeza utilizadas.3 min de leitura

Converter PDF em PDF/A e conferir a validaçãoEscolha o perfil PDF/A pedido, converta o documento e confirme que a validação foi feita para esse perfil. Confira também o conteúdo e a aparência da saída. A conformidade do formato não certifica os dados nem garante a aceitação do arquivo em qualquer procedimento.3 min de leitura

PDF bloqueado para imprimir ou copiar: o que conferir?Se o PDF abre mas não permite imprimir ou copiar, confira a mensagem exata e as permissões do documento. Isso é diferente de uma senha de abertura desconhecida ou de uma página que contém apenas imagem. Use uma cópia autorizada e teste a ação necessária depois de baixar o resultado.3 min de leitura

Organizar páginas do PDF e salvar a nova sequênciaMova as páginas de acordo com o conteúdo e salve uma cópia na sequência definitiva. Abra o download e confira cada passagem modificada. Os números impressos e as referências do índice não mudam necessariamente quando as folhas trocam de posição no arquivo.3 min de leitura

Como converter Word em PDF sem bagunçar o documentoEscolha o DOCX em Word para PDF, baixe a saída e confira a apresentação antes de enviar. Revise fontes, tabelas e páginas no próprio PDF, preservando a versão editável para correções.5 min de leitura

Como transformar fotos em PDF no celular ou computadorAdicione as fotos em JPG para PDF, organize a ordem e baixe o documento. Confira todas as folhas para garantir que o conteúdo está completo e legível.5 min de leitura

Como converter PDF em JPG ou PNG e escolher o formatoSelecione as páginas em PDF para JPG, escolha JPG ou PNG e confira as imagens baixadas. Use o conteúdo e a finalidade para decidir o formato, preservando o PDF original como referência.5 min de leitura

Como separar páginas de PDF em arquivos diferentesAbra Dividir PDF, escolha as páginas de cada parte e baixe os arquivos. Confira os limites de cada seleção pela posição da folha no PDF e pelo conteúdo que aparece nela.6 min de leitura

Como excluir páginas de um PDF e conferir a nova cópiaMarque as páginas indesejadas em Excluir páginas do PDF e baixe uma nova cópia. Confira as transições entre as folhas que restaram e preserve o arquivo original.6 min de leitura

Como girar páginas de PDF e salvar na posição certaAbra Girar PDF, ajuste as folhas que estão deitadas ou invertidas e baixe o resultado. Reabra a saída para confirmar que a orientação ficou salva no documento.6 min de leitura

Como numerar páginas de PDF e colocar cabeçalho ou rodapéEscolha a posição e o formato em Numerar páginas do PDF. Para acrescentar título ou data junto à identificação, use Cabeçalho e rodapé e confira o espaço de cada folha.5 min de leitura

Como colocar senha em PDF para abrir o documentoAbra Proteger PDF, defina uma senha para abertura e baixe o arquivo protegido. Teste a saída e compartilhe a senha por um canal separado do documento.6 min de leitura

Como converter Excel em PDF e recuperar tabelas do PDFUse Excel para PDF para apresentar uma planilha e PDF para Excel para recuperar uma tabela em células. São operações diferentes: confira colunas e páginas na ida, valores e estrutura na volta.5 min de leitura

Como converter PowerPoint em PDF para enviar a apresentaçãoSelecione a apresentação em PowerPoint para PDF e baixe o resultado com um slide por página. Confira os elementos estáticos, pois animações e reprodução de mídia não funcionam como na apresentação original.7 min de leitura

Como criar PDF preenchível com campos de formulárioAbra Criar formulários PDF preenchíveis, revise os campos detectados e ajuste tipos, nomes e posições. Salve o formulário e teste uma cópia preenchida antes de distribuí-lo.7 min de leitura

Como verificar assinatura digital ICP Brasil em PDFAbra o arquivo original em Verificar assinatura de PDF e leia separadamente a integridade, o certificado e as alterações posteriores. Uma imagem de assinatura não comprova esses pontos. Para uma exigência oficial de conformidade ICP Brasil, confirme também o procedimento indicado pelo órgão destinatário.5 min de leitura

Como converter PDF em Word para editar o textoSelecione o PDF no conversor, baixe o DOCX e compare o texto editável com o original antes de fazer alterações.6 min de leitura

Assinatura gov.br tem validade jurídica? EntendaSim. A assinatura gov.br é uma assinatura eletrônica avançada, prevista na Lei 14.063/2020, e tem validade jurídica. Órgãos públicos a aceitam dentro dos níveis que cada um define, e entre particulares ela vale quando as partes a admitem. Só os atos que a lei reserva à assinatura qualificada, como a transferência e o registro de imóveis, exigem certificado ICP-Brasil.7 min de leitura

Como colocar assinatura em PDF no celular ou no PCAbra o PDF em Assinar PDF, desenhe a assinatura com o mouse ou o dedo, digite seu nome num estilo manuscrito ou envie uma foto da sua assinatura no papel, arraste até a linha certa e baixe o PDF assinado. Não precisa de impressora, scanner nem conta.6 min de leitura

Como juntar frente e verso do RG em um só PDFFotografe a frente e o verso, coloque as duas fotos em JPG para PDF com a frente primeiro e clique em Criar PDF. Para ter os dois lados na mesma folha A4, use o modo Documento de identidade do scanner no celular. Depois, junte com os outros documentos e reduza o tamanho se o site pedir.6 min de leitura

Como diminuir o tamanho do PDF para enviar por e-mailComprima o PDF no nível Recomendado: as fotos e digitalizações dentro dele vão para cerca de 150 DPI, o texto continua nítido e o arquivo costuma ficar bem menor. Se o site ou o e-mail tem um limite exato, escolha um limite de tamanho e digite o valor em KB. Se nem assim couber, divida o documento.6 min de leitura

Como tirar a senha de PDF de fatura ou extratoAbra o PDF em Desbloquear PDF, digite a senha que você já usa para abrir o arquivo e baixe a cópia sem senha. Se o PDF abre normalmente e só bloqueia impressão ou cópia, nenhuma senha é pedida. Senha esquecida não tem como ser quebrada.5 min de leitura

Como transformar um PDF em tamanho A4 sem cortarAbra o PDF em Redimensionar PDF, escolha A4 e Retrato e deixe Manter proporções marcado. Cada página é ajustada para caber na folha A4 e centralizada, sem cortar nem deformar o conteúdo. Para fotos, use JPG para PDF, que já cria páginas A4.6 min de leitura

Como editar PDF escaneado ou digitalizado, sem programaAbra o arquivo em Editar PDF digitalizado. As páginas escaneadas são lidas por OCR e cada linha vira texto que você clica e reescreve, por cima da página original. Em Idioma do documento, deixe Detectar automaticamente ou escolha Português. Depois salve e baixe o PDF.6 min de leitura

Como transformar imagem em texto: foto, print ou scanAbra Imagem para texto, escolha até cinco imagens JPG, PNG ou WebP, deixe o idioma em Detectar automaticamente ou escolha Português e clique em Extrair texto. O texto aparece ao lado de cada imagem, pronto para copiar ou baixar como .txt.5 min de leitura

Como transformar PDF escaneado em texto editávelAbra o PDF em PDF para texto: as páginas com texto são lidas direto e as escaneadas passam por OCR. Copie uma página, copie todas ou baixe um .txt e cole no Word. Se quiser manter o próprio PDF e pesquisar nele, abra em Editar PDF digitalizado, salve e baixe.6 min de leitura