How to Sign a PDF on iPhone Without Printing

Print, sign, rescan, email — the old routine takes twenty minutes and a printer you probably don't own. Signing directly on your iPhone takes about one.

The quick answer

Open the PDF in a signing-capable app, draw your signature once with your finger, place it where it belongs, and save. The signed PDF is ready to send back immediately.

Step-by-step: sign a document on your iPhone

1. Import the document. Open the PDF in Mobile Document Scanner — from email, the Files app, or a fresh scan of a paper form.
2. Create your signature. Draw it with your finger or Apple Pencil. Slow, deliberate strokes look best. You can save multiple signatures — full name, initials, or both.
3. Place and resize. Drag your signature onto the signature line and pinch to fit.
4. Save and send. Share the signed PDF straight back by email or Messages.

Signing paper forms

Handed a paper form? Scan it first — here's the fast way — then sign the scanned PDF. You skip the printer in both directions.

Is an electronic signature valid?

For everyday paperwork — school forms, rental applications, freelance contracts, HR documents — drawn electronic signatures are widely accepted. For specific legal requirements in your jurisdiction, check with the requesting party; some documents (like certain notarized deeds) still require wet ink.