About Sign PDF
Sign PDF lets you draw your signature with a mouse, finger or stylus and stamp it onto any page of a PDF — fully inside your browser. No upload, no third-party signing service. Perfect for contracts, school forms, NDAs, and rental agreements where you just need a quick visible signature.
- No uploads
- Browser-only
- Works offline
- 100% free
How it works
- 1
Choose your PDF
Drop the document you want to sign.
- 2
Draw your signature
Use the canvas pad with mouse, finger or stylus. Pick the ink colour and add an optional caption (your name + date).
- 3
Place and download
Choose the page and position (corner or centre), then click ‘Sign PDF’ to download the signed copy.
Related tools
Browse allFrequently asked questions
Is a drawn signature legally binding?
In many jurisdictions a visible drawn signature qualifies as an electronic signature, especially for low-risk documents. For regulated signatures (eIDAS QES, US-ESIGN with strict identity verification) you need a certified eSign provider.
Are my files uploaded to a server?
No. Every tool on SnapToolz runs entirely inside your browser using JavaScript and WebAssembly. Your file is read locally, processed in memory, and the result is offered as a download. Nothing is sent to a server — there isn't one to send to.
Can I sign every page or just one?
Both. Choose ‘Last page only’, ‘First page only’, or ‘Every page’. The signature is placed at the same position on each page.
Can I add the date or my name under the signature?
Yes — fill in the optional Caption field. It's drawn directly under the signature in a small font.
Does it work offline?
Yes. SnapToolz is a Progressive Web App. After your first visit, the app is cached on your device and every tool keeps working without an internet connection.