How to Sign a PDF on iPhone
A contract arrives by email, a form comes in a chat – and you need to sign it on your iPhone right now. You don't need an app: Sehnna's Sign PDF tool works in Safari, and you can sign documents on iPhone with your finger in about a minute. The PDF stays on your phone.
Your file stays on your device. Sehnna does not upload or store your PDF.
This tool adds a visual signature to your PDF. It is not a certified digital signature or identity verification service.
Your file stays on your device. Sehnna does not upload or store your PDF.
- No signup required
- Files stay on your device
- Browser-based conversion
- Fast download
- Free to use
Sign a PDF on iPhone in Safari, step by step
- If the PDF is in Mail or a chat, tap it, tap the Share button and choose “Save to Files”.
- Open sehnna.com/sign-pdf in Safari and tap “Choose PDF”, then “Browse” and pick the file.
- Tap “Draw” and sign with your finger – or tap “Type” and enter your name.
- Tap “Use this signature”, then drag it onto the signature line and pull the blue corner to resize.
- Tap “Sign PDF” and then “Download signed PDF”.
- Find the signed file in the Files app under Downloads and share it from there.
Sign documents on iPhone without installing an app
Many signing apps ask for an account or a subscription. Sehnna runs in the browser, so there is nothing to install and nothing to sign up for. The same steps work on iPad.
Tips for signing with your finger
- Turn your iPhone sideways – the drawing area gets wider.
- Sign slowly in one or two strokes for a smooth result.
- Not happy? Tap “Clear” and try again, or switch to a typed signature.
- Use the page arrows to go to the page with the signature line before placing it.
Privacy: your files stay on your device
Your files stay on your device. Conversions run in your browser. Sehnna never uploads, stores or reads your documents – there is no server that receives them, no account and no email address.
- Your files stay on your device
- No signup required
- Browser-based conversion
Sign a PDF on iPhone – questions and answers
Do I need an app to sign a PDF on iPhone?
No. Sehnna works in Safari and other iPhone browsers – no app, no account.
Where is the signed PDF saved on my iPhone?
Downloads from Safari are saved in the Files app, usually in the Downloads folder.
Can I sign documents on iPad too?
Yes. The steps are the same on iPad, and you can also sign with an Apple Pencil.
Is my document uploaded?
No. Your file stays on your device. Sehnna does not upload or store your PDF.
Is this a certified signature?
No. This tool adds a visual signature to your PDF. It is not a certified digital signature or identity verification service.