Sign a PDF on Mac

Type, draw or upload your signature, drop it where it goes and download the signed PDF. It works in Safari, Chrome or Firefox on your Mac.

Free to use
Works on any device
Nothing to install

Draw, type or upload it
Place it anywhere, any page
Resize and move it freely
No certificate needed

PDF · Word · JPG · PNG · WebP

Drag & drop file here

or choose a file from your device

Choose the PDF on your Mac to sign

PDF, Word or image files

Everything Sign PDF can do

Put your signature, your initials and the rest of what a form asks for onto a document, and drag each one into place. Free, in your browser, no account or certificate needed.

Making your signature

Draw it with a mouse, a finger or a pen
Type it in three handwriting styles
Upload a photo of a sheet you signed
Photographed paper is cleared away to transparent
Blue or black ink

Initials and fields

Initials, drawn, typed or uploaded the same way
Your name, typed once and placed as often as needed
A date from a calendar, in four formats
Any other line of text a form asks for
Check and cross marks

Placing what you add

Drag to move it, drag a corner to resize it
Copy the selected item onto every page
Place a signature you made earlier again

What you get back

Name, date and text saved as real, selectable text
Signatures stay sharp transparent images on the page
Start from a PDF, a Word file, an ODT or a photo
Open the full editor once the signing is done

How it works

Sign PDF on Mac in three steps

Open the PDF

Drag it in from Finder or Mail.

Make your signature

Type your name and pick a style, draw it with the trackpad or mouse, or upload a picture of it.

Place it and download

Drag the signature onto the line, resize it, add the date if needed, then Review & download.

Step by step

Sign PDF on Mac: a visual walkthrough

Signing on a desktop screen, shown on the signature block of our sample agreement: the file dragged in, a typed signature with the name and date set on the Client line, and the signed page ready to save.

Drag the PDF in
Drop the file from Finder onto the box, or press Choose File. The editor opens in Sign mode with the Sign this document panel on the right.
Type, place and line up
We chose Type, entered John Smith, placed the signature and added the Name and Date items from the same panel. Each one was then dragged onto the Client line at the foot of page 3.
Review & download
Review & download writes the signature, name and date into the page and opens the finished document, scrolled to the signed page, with Download PDF beside it.

Two signatures on a desktop screen, read back from the saved files

We signed our 3-page letter on this page in a 1366 pixel window, once typed and once drawn with the mouse, dragged the signature beside the closing lines and opened the downloads. Measured on October 24, 2026.

Signature	Saved as	On the page	File size (6,246 bytes before)
Typed: Daniel Okafor, first handwriting style	520 × 112 px picture with a see-through background	Page 1 only, 176 × 38 pt (about 2.4 inches wide)	22,478 bytes
Drawn with the mouse	332 × 99 px picture with a see-through background	Page 1 only, 127 × 38 pt	12,182 bytes

Both signatures went only where they were placed; pages 2 and 3 were untouched. The typed one weighs more because the handwriting style is drawn in finer detail.

Compared with Preview

Preview can sign too: Markup, then Sign, then make a signature with the trackpad, the camera or your iPhone. It is good once set up, but it only works in Preview, the signature lives in that Mac's settings, and typing a signature is not one of the options.

This page works in any browser, takes a typed signature as well as a drawn one, and adds name, date, initials and ticks from the same panel, which is quicker for forms that ask for several of them.

Getting a good signature on a Mac

Some tips for each method:

Drawing: on a trackpad, use one finger and go slowly; Undo removes the last stroke.
Typing: three handwriting styles are offered; pick the one closest to your hand.
Uploading: sign on white paper, photograph it in daylight and upload the photo; a PNG with a clear background looks best.
Initials on every page: make them once under Initials and place them page by page.

Is this a legal signature?

For most everyday documents, such as forms, letters, leases and agreements between businesses, an electronic signature placed like this is accepted in the US, UK, Canada and Australia. Some documents need more: wills and deeds, for example, often still need ink or witnesses. To prove who signed and that nothing changed afterwards, use Digital Signature, which adds a certificate-based signature.