How to use Sign PDF
Choose the PDF, draw your signature in the box, type the page to sign (leave it empty for the last page), pick a position and size, then press Sign PDF and download the signed file.
Electronic signature or digital signature?
This tool adds an electronic signature: a picture of your handwritten signature placed on the page, which is how most everyday forms, offer letters and delivery notes are signed. A certificate-based digital signature is different: it is issued by a trust provider and proves the file was not changed. If a document asks for a qualified or certificate signature, use the signing service the sender names.
Getting a neat signature
Sign large in the box; the drawing is trimmed and scaled, so a bigger signature looks smoother on the page. On a phone, turn it sideways for more room. If the signature lands on text, run it again with another position, or use Add Image to PDF for an exact spot.
How it works
The drawing is added to the page as an image
Examples
- Worked example
Draw your signature and put it at the bottom right of the last page of a contract.
Limitations and assumptions
This is an electronic signature: a picture of your handwriting on the page. It is not a certificate-based digital signature.
Frequently asked questions
How do I add a signature to a PDF?
Choose the PDF, draw your signature, choose the page and position, and press Sign PDF. Download the signed copy and send it back.
Can I sign on my phone?
Yes. Draw with your finger in the box; the page works in mobile browsers.
Is my document uploaded?
No. The signature is added in your browser and the file stays on your device.