PDF Signer: Sign PDF

Sign PDF documents right on your phone. Import a PDF, place your signature, save. That is the whole app.

No account. No subscription. No watermark on your signed file. Your document never leaves your phone.

SIGN A PDF IN UNDER A MINUTE
- Open a PDF from your files, or straight from Gmail, WhatsApp or Drive
- Drag your signature exactly where it belongs, and pinch to size it
- Zoom in to place it precisely on the line
- Save a signed copy. Your original file is never changed
- Share it back in one tap

YOUR SIGNATURE, YOUR WAY
- Draw it with your finger, in black, blue, red or green
- Type your name and choose from 25 handwriting styles
- Or photograph a signature you wrote on paper, and we lift the ink off the page
- Save it once and reuse it forever

FILL THE REST OF THE FORM
- Add the date
- Add your initials
- Add a line of text or a check mark
- Everything drags into place the same way

WORKS OFFLINE, STAYS PRIVATE
Everything happens on your phone. Nothing is uploaded, nothing is stored on a server, and no account is required. Turn off your data and it still works.

FREE, ALL OF IT
Every feature is free. There is no premium tier, no export limit, no daily cap, and no watermark. Ever.

ONE APP, ONE JOB
This is not a 30-tool PDF suite. It signs PDFs, and it is fast because that is all it does.

A note on digital signatures: PDF Signer creates an electronic signature, which is what almost every agreement, form and contract needs. It does not create a certificate-based digital signature (the kind that shows a blue check in Adobe Acrobat and requires a certificate from a certificate authority). If you specifically need that, you need different software, and we would rather tell you now.