PDF Tools
Add a Signature to a PDF
Draw or type a signature onto a PDF and place it where you want. A visible signature, not a cryptographic one — the difference is explained below.
Privacy
Your file never leaves your device. It is parsed and rewritten by your own browser, so nothing is uploaded, queued or logged.
Tips
- Click the page preview to place the signature. The dashed box is where the line will sit on the finished file.
- The arrows beside the page number page through the document. That changes only what you are looking at; the Pages box decides which pages are signed.
- Leave the pages box on "last" to sign only the final page, which is where most contracts want it.
- The date, if you include it, is drawn on a second line just under the signature.
- X and Y are PDF points from the bottom-left corner, 72 to the inch. A4 is 595 × 842, US Letter 612 × 792.
- This is a visible signature and can be removed by anyone with an editor. A cryptographic signature cannot — see the question below.
Frequently asked questions
Is this a legally binding digital signature?
No, and the distinction matters. This draws a signature onto the page, the same as signing a printout and scanning it. A digital signature in the legal sense is a cryptographic operation that binds a certificate to the document so any later change is detectable, and it needs a certificate from a trust service provider. If a contract, a court or a regulator asks for a digital signature, this is not it — use a qualified provider. For a form, an invoice or an internal approval that just needs to look signed, this is exactly right.
Is this legally binding?
No. This adds visual elements only. Legally binding digital signatures require PKI certificates and cryptographic signing, which needs additional libraries.