Sign PDF
Draw your signature, type it, or upload a scan — then drop it exactly where it belongs on any page. Nothing is uploaded; the signed file is built in your browser.
How to Sign a PDF in 3 Steps
Drop a PDF
The first page opens in the viewer. Use ‹ › to move between pages.
Create & Place the Signature
Draw it on the pad, type your name in a script style, or upload a PNG. Click Add to page — it lands on the current page; drag it into position. Settings control its width, whether it repeats on every page, and an optional date stamp.
Apply & Download
Click Apply. The signature is embedded as an image on the page itself, so it shows in every reader and prints normally.
Sign PDF — Frequently Asked Questions
Is this a legally binding e-signature?
It places an image of your signature on the document, the digital equivalent of signing a printout — accepted for most everyday forms and agreements. It is not a cryptographic digital signature with a certificate; for regulated contexts use a certificate-based service.
Can I save my signature for next time?
Not yet — for privacy nothing is stored, not even in the browser. Tip: download a PNG of your drawn signature once (right-click the pad after drawing) and use Upload next time.
The signature looks jagged after applying
The pad is 720 px wide, plenty for a signature up to about half the page width. For a very large signature, upload a higher-resolution PNG instead.
Can several people sign?
Yes — add as many signatures as you like on any pages before applying. Or apply, download, and the next person opens that file here.
The tool says my PDF is encrypted — what now?
Password-protected PDFs must be opened with their password before they can be edited. Use the Unlock PDF tool first, then come back.
Is my PDF uploaded anywhere?
No. The document is parsed and rewritten by pdf-lib and rendered by PDF.js (the engine Firefox uses) entirely inside your browser. Nothing is transmitted or stored.