PDF
Sign PDF
Upload a PDF, draw your signature or upload an image of it, then drag it onto any page at the size you want and download the signed file. Uses pdf-lib in the browser — the document is never uploaded.
Files are processed in your browser. Nothing is uploaded to our servers.
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Add a signature to a PDF: draw it with your mouse or trackpad, or upload an image of it, then drag it onto any page and resize it before downloading. The document is processed in your browser and never uploaded.
Frequently asked questions
- How do I sign a PDF online?
- Upload your PDF, draw your signature or upload an image of it, drag it to the right spot on the page, size it, and download the signed file.
- Is a drawn signature legally binding?
- It adds a visible signature image to the document, which is widely accepted for everyday agreements. For regulated or qualified electronic signatures (eIDAS, ESIGN with audit trails), use a certified e-signature provider.
- Is my document uploaded to a server?
- No. Signing happens in your browser with pdf-lib; the PDF and your signature never leave your device.
- Can I draw my signature or upload one?
- Both. Draw with a mouse, trackpad, or touchscreen, or upload a PNG/JPG image of your signature (a transparent PNG looks best).
- Can I place the signature on any page?
- Yes. Page through the document, then drag the signature to where it should appear and adjust its size.