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How to Sign a PDF on iPhone — Free, Legal, in 30 Seconds

By DocFila Team · April 16, 2026 · 5 min read

You don't need DocuSign, a printer, or a scanner to sign a PDF on your iPhone. With DocFila you can draw, type, or stamp a saved signature on any PDF in under 30 seconds — and the result is a legally binding, embedded e-signature accepted in 60+ countries. Here's how.

Are e-signatures legal?

Yes, in nearly every modern jurisdiction. The US ESIGN Act (2000), the EU eIDAS regulation (2014), the UK Electronic Communications Act, and equivalent laws in Canada, Australia, India, and most of Asia all give electronic signatures the same legal weight as wet-ink signatures for the vast majority of contracts. (Exceptions: wills, some real-estate transfers, and certain family-law documents — check local rules.)

Sign a PDF on iPhone with DocFila

1. Open DocFila and tap the PDF you want to sign.
2. Tap Sign.
3. Draw your signature with your finger or Apple Pencil, type your name in a handwritten font, or insert your saved signature.
4. Drag the signature onto the signature line. Resize with two fingers.
5. Tap Save. The signature is embedded in the PDF — no overlay, no flattening tricks.
6. Share via Mail, Messages, Drive, or send back through DocFila's e-sign request workflow for the other party.

Save your signature for one-tap signing

Tap Settings → Signatures and create a default signature with your name, initials, and (optionally) date stamp. Next time, signing a contract takes one tap.

Request signatures from other people

To send a contract to a counterparty, tap Sign → Request Signature, drop the signature fields where they should sign, and enter their email. They get a secure link, sign on any device, and you receive the signed PDF plus an audit trail (timestamps, IP, device fingerprint).

Common questions

• Do I need to scan the document first? No — DocFila signs native PDFs directly. If you only have a paper copy, scan it with the in-app scanner first.
• Can I undo a signature? Yes, before saving. Once embedded, the signature is part of the document.
• Is the signature visible to everyone? Yes — embedded signatures display in any PDF reader (Preview, Adobe, Chrome).

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