Sign PDF
Draw a signature and place it.
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About Sign PDF
Sign PDF lets you draw your signature and place it onto a page of a PDF, so you can sign a document without printing it, signing on paper, and scanning it back. You draw with a mouse, trackpad, or finger, then position the signature on the page where it belongs — the signature line of a contract, a form, or a letter. It is the quick way to return a signed file the same way it arrived.
The whole thing runs in your browser: the drawing is captured on a canvas and placed into the PDF with pdf-lib, all on your own device. Your signature and your document are never uploaded to a server. It is free, needs no account or usage limits, and adds no watermark. Nothing to install — a normal browser is all you need.
Frequently asked questions
- Is it free, and do I need an account?
- Yes, it is free, with no account and no sign-up. You can sign as many PDFs as you like, with no usage limits and no watermark.
- Is my signature or document uploaded anywhere?
- No. You draw the signature on a canvas in your browser, and it is placed into the PDF with pdf-lib on your own device. Neither the signature nor the file is sent to a server.
- How do I draw and place the signature?
- Draw your signature with a mouse, trackpad, or finger, then move it onto the page and position it over the signature line. When it looks right, save the signed PDF.
- Can I put the signature on any page?
- Yes. You choose which page to sign and where on that page the signature sits, so you can place it on the last page, an initials line, or wherever the document needs it.
- Is this a legally certified digital signature?
- It adds a visible, hand-drawn signature to the page — the same thing you would get by signing on paper. It is not a certificate-based cryptographic digital signature, so if a document specifically requires a verified digital certificate, use a service built for that.