How to Sign a PDF on Mac
Preview can sign PDFs, but the trackpad capture is fiddly and the saved signatures are easy to lose.
Open the Sign PDF toolA browser-based signer gives you a clean way to draw or type a signature and drop it exactly where it belongs, on any Mac.
Open your PDF below, sign it, and download the finished file.
Steps to Sign a PDF on Mac
Open your PDF
Load the document you need to sign — a contract, form, or letter.
Create your signature
Draw it, type it, or add your initials, then drag it to the right spot on the page.
Download the signed PDF
Save a finished, signed copy ready to send back.
No printing or scanning
Sign on screen and skip the print-sign-scan loop entirely.
100% private
Everything happens in your browser. Your files are never uploaded to a server, so nothing is stored, shared, or seen by anyone but you.
Free, no sign-up
No account, no watermark, and no install. Use it as many times as you need, completely free.
Ready to start?
Sign PDF runs free in your browser — your files never leave your device.
Open Sign PDFFrequently asked questions
Is this better than Preview?+
It's more flexible — type or draw a signature, resize it, and place it precisely, without re-capturing it through the trackpad each time.
Is an electronic signature legally valid?+
In most countries, electronic signatures are legally binding for the vast majority of everyday documents. Check local rules for special cases like wills or notarized deeds.
Do I need an Adobe account?+
No. This works entirely in your browser with no Adobe software or subscription.