Sign a PDF
Draw your signature or type your name, place it on any page, and download the signed copy. Nothing is uploaded, it all happens on your device.
Click to choose a PDF file, or drag and drop it here
Stays on your device, nothing is uploaded.
Are my PDF files uploaded anywhere?
No. Signing happens entirely inside your browser using JavaScript. Your files never leave your device or touch a server.
Is this a legally binding electronic signature?
This tool draws an image of your signature onto the page, it doesn't add cryptographic signing, certificates, or audit trails. It's meant for casual sign-offs, not documents that require a legally certified e-signature.
Can I draw my signature with a mouse?
Yes, click and drag (or use your finger on a touchscreen) in the drawing pad. You can also just type your name in a cursive style instead.
Can I sign more than one page?
Yes. Turn on "Sign every page" to stamp the same signature on every page at once, or leave it off to place it on just the one page you pick.
Can I sign a password-protected PDF?
Not currently. Password-protected or encrypted PDFs can't be read by the tool and will show an error, remove the password first with a PDF reader.
How it works
When you draw a signature, the tool captures your strokes on an HTML canvas, trims away the empty space around them, and exports the result as a transparent PNG. Typed signatures work the same way: the cursive font renders to a canvas first. Either way, that PNG is then embedded into the PDF's object structure with the pdf-lib library and drawn onto the page at the exact position and size you chose, scaled from preview coordinates to the page's real dimensions.
Everything happens inside your browser tab. The PDF is read with the FileReader API, modified in memory, and handed back to you as a download. Open your browser's DevTools Network tab while signing: no request ever carries your document or your signature anywhere.
One distinction worth knowing: this adds a visual signature, an image placed on the page, which is what most everyday paperwork needs. It is not a cryptographic digital signature of the kind that certificate authorities issue, so a PDF reader won't show a green "digitally signed and verified" banner. For contracts, NDAs, and forms where the other side expects a pen-on-paper style signature, a visual signature is exactly what's being asked for.