How to Sign a PDF on iPhone
You can sign a PDF on an iPhone straight from Safari — no App Store download required.
Open the Sign PDF toolDraw your signature with a fingertip, place it on the page, and save the signed PDF back to Files or share it directly.
Open your document below in your mobile browser and sign it in a couple of taps.
Steps to Sign a PDF on iPhone
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
Do I need an app to sign on iPhone?+
No. The signer runs in Safari, so you can sign and download without installing anything.
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.