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.
Converting files
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.
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.
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.
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.
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.
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.
How do I turn a PDF page into a JPG or PNG?Render the pages as images and pick the format by content: PNG for pages that are mostly text or line art, JPG for pages dominated by photographs.
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.
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.
How do I turn a folder of files into one PDF?Zip the folder and convert the archive — each file inside is converted in turn and the results are joined into one document, in filename order.
How do I turn a text file into a PDF that keeps its layout?Use a converter that renders the file in a monospaced font and expands tabs properly — a proportional font destroys the column alignment that plain text depends on.
How do I turn a PowerPoint into a PDF that looks right?Convert the .pptx directly rather than printing it. Everything visible on each slide becomes one page at the deck's own dimensions — animations and transitions do not survive, because a PDF page cannot move.
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.
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.
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.
Page layout
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.
How to add page numbers to a PDFOpen the PDF in a page-numbering tool, choose where the numbers go and what they say, and download the stamped copy — the numbers are drawn onto the existing pages without touching anything else.
How to reduce a PDF's page count without shrinking the textMeasure where the ink actually sits on each page, crop to that, and stack several of those crops on one sheet — pages that are mostly empty combine at full size with nothing lost.
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.
How do I add a header, footer or page numbers to a PDF?A header or footer is three independent slots on one line — left, centre and right — and page numbers are a token that becomes the real number on each page, so a title, a date and “Page 3 of 40” can all sit on the same band.
Organising pages
How to merge PDFs — and keep them in the right orderUpload 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.
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.
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.
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.
How to combine photos into one PDFUpload 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.
Can I merge 6 PDF pages into 1 without losing quality?Six full pages on one sheet must be drawn at about 40% size, so the text becomes unreadable — but pages that are mostly empty can be combined at 100% with nothing lost, and that is usually what people actually want.
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.
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.
How do I insert a blank page or a divider into a PDF?Insert a blank page at the position you want it and the pages after it shift down — useful for double-sided printing, for separating merged documents, and for leaving room to write or stamp.
Security
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.
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.
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.
Working with scans
Why can't I select the text in my PDF?Because the PDF is almost certainly a scan — a photograph of a page rather than text — so there is nothing to select until OCR reads the pixels and turns them into characters.
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.
How do I edit the text in a scanned PDF?You cannot edit a scan directly, because the page is a picture. OCR PDF recognises the words and rebuilds them as real editable lines on top of the original page, so you can correct a name or a figure and save a normal PDF.
How do I make a grey, speckled scan readable?Raise the contrast and convert to black and white. That removes the grey cast and the speckle in one step, because a scan's real problem is almost never brightness — it is that the paper and the ink are too close in tone.
Getting the most out of PDFs
Compress a PDF or cut its page count — which do I need?If the file will not attach to an email you need compression; if the document is tedious to read or expensive to print you need fewer pages — compression never removes a page and combining pages barely changes the file size.
How do I print a long PDF on fewer sheets of paper?Double-sided printing halves the sheets for nothing; your printer's own 2-up halves them again at about 70% size; and rebuilding the PDF so sparse pages share a sheet reduces the count with the text left at full size.
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 nothing is kept afterwards.
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.
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.
Why is my PDF so large, and what actually makes it smaller?Almost always images — a scan or a photo-heavy document is mostly picture data, and re-encoding those images is what reduces the size; text and vectors take almost no space at all.
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.
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.
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.
Why won't my PDF attach to an email?Almost always because the file is over the recipient's size limit, which is often lower than your own — and attachments grow by roughly a third in transit, so a 24 MB file is really 32 MB.