Sign PDF
Add your signature to a PDF without printing — draw it with a mouse or finger, type it, or upload an image — then choose the page and position.
Result
Choose a PDF and create your signature.
How to use this tool
- Choose a PDF.
- Draw your signature, type your name, or upload a signature image.
- Choose the pages, position and size, then select Sign PDF.
How it works
Your signature is turned into a transparent PNG image and drawn onto the chosen pages with pdf-lib. Pages stored with a rotation are handled so the signature appears upright.
Example
A contract
Sign on the last page, bottom right, at 25% of the page width — a typical place for a signature line.
Privacy and limitations
- Your files are processed on your device and never uploaded.
- This adds a visible signature image. It is not a certified digital signature, which some legal documents require.
Frequently asked questions
Is an image signature legally binding?
In many places, electronic signatures are valid for everyday agreements, but rules vary and some documents need a certified digital signature.
Can I sign on a phone?
Yes — draw with your finger in the signature box.