How to Sign a PDF on iPhone in Under a Minute
To sign a PDF on iPhone, open the Sign PDF tool in Safari, upload the document, draw your signature with your finger or Apple Pencil (or type it in a script font), drag it into position on the page, and download the signed file. The entire process runs in your browser in under a minute.
When a visual signature is enough
For everyday documents — a signed acknowledgment, an internal form, a lease initial — a drawn or typed signature placed on the PDF is usually sufficient. For contracts that legally require a qualified or notarized electronic signature, check your jurisdiction's e-signature law before relying on a visual-only signature.
Step-by-step
1. Open the Sign PDF tool and upload your document from Files or iCloud Drive.
2. Choose to draw your signature (finger or Apple Pencil) or type it in a handwriting-style font.
3. Drag the signature onto the correct page and position.
4. Resize it if needed, then download the signed PDF.