Guide
How to sign a PDF on a Mac
macOS Preview can sign PDFs, but the signature setup is clunky and it is locked to one Mac. This guide shows a faster, portable way to sign a PDF on a Mac in any browser — Safari, Chrome, or Arc — with nothing installed.
Updated June 2, 2026
Step by step
- 01
Open the signer in your browser
On your Mac, open the DocSignHub signer in any browser. No software install, no Adobe Acrobat, no account.
- 02
Upload the PDF
Drag the PDF from Finder into the upload area or click to browse for it. It loads locally in your browser.
- 03
Sign with your trackpad, keyboard, or an image
Draw your signature on the trackpad, type your name in a handwriting font, or upload a photo of your handwritten signature.
- 04
Position and export
Drag the signature onto the line, resize to fit, add the date if required, and download the signed PDF to your Mac.
Why not just use Preview?
Preview's signature feature works, but it has friction: you create a signature once by holding paper up to the camera or drawing on the trackpad, it is stored only on that Mac, and moving a saved signature to another computer is not straightforward.
A browser signer is portable — the same flow works on any Mac, any browser, and on your phone — and it offers typed and uploaded signatures in addition to drawing. For people who sign on more than one device, that portability is the main advantage.
Drawing a clean signature on a trackpad
Trackpad signatures can look shaky. Two quick tips help: draw slowly and a little larger than you think you need, then resize it down on the page — shrinking a signature hides small wobbles. If you cannot get a result you like, type your name in a handwriting font instead, which looks consistent every time.
Everything stays on your Mac
The PDF is processed locally in the browser, so your document is never uploaded. You get the convenience of a web tool with the privacy of desktop software — useful for contracts and financial paperwork you would not want to send to a cloud service.
Frequently asked questions
How do I sign a PDF on a Mac without Adobe?+
Open the DocSignHub signer in any browser on your Mac, upload the PDF, add your signature by drawing on the trackpad, typing, or uploading an image, then download. Adobe Acrobat is not needed.
Is this better than Preview?+
It is more portable and flexible: the same signing flow works across browsers and devices, and you can type or upload a signature, not just draw one. Your file still stays local, like Preview.
Does it work in Safari and Chrome?+
Yes. The signer runs in any modern browser on macOS, including Safari, Chrome, Arc, Firefox, and Edge.