Someone sends you a PDF to sign and you’re away from your computer. You don’t need to print it, and you don’t need an app: your phone’s browser is enough.
Signing on an iPhone
- Save the PDF to Files (in Mail, touch and hold the attachment, then Save to Files).
- Open the Sign a PDF page in Safari and tap Choose a PDF, then pick the file.
- The signature window opens. Choose how to sign:
- Draw: sign with your finger in the box.
- Type: type your name and pick a handwriting style.
- Upload: use a photo of your signature on white paper.
- Tap Place signature, then tap where it goes. Drag it into position and pull the corner to resize it.
- Tap Download. Safari saves the signed PDF to Files › Downloads, ready to attach to a reply.
Signing on Android
The steps are the same in Chrome. Pick the PDF from your downloads or from Google Drive, sign, place and download. The signed file lands in Downloads.
Tips for a neat signature
- Turn the phone sideways when drawing: the box gets wider and your signature less cramped.
- Draw it larger than you need. You can scale it down on the page, and it stays smooth.
- Reuse it. Your last signatures are remembered in your browser, so next time it’s one tap. They’re stored only on your phone, never uploaded.
Is this a legal signature?
What you add is a picture of your signature on the page, the same as signing a printout and scanning it. That’s what most everyday paperwork asks for: rental forms, school letters, delivery notes, many contracts.
Some documents require a certificate-based digital signature (a qualified electronic signature). That’s a different, cryptographic thing, and it isn’t supported here yet. If the sender asks for one specifically, use the tool they recommend.