Draw your signature or upload an image, drop it anywhere on the page, resize it and download the signed PDF. The document never leaves your device, and it is completely free.
100% private: everything runs on your computer, your files never leave your device.
Sign PDF puts a handwritten signature on a document, on your own computer. You draw it with the mouse, the trackpad or a finger, or you upload an image of a signature you already have, and then you place it where it belongs on the page and download the signed file.
This is a visual signature. It is the digital equivalent of printing a document, signing it with a pen and scanning it back in, except that nothing is printed, scanned or lost to a bad scan. That is what most documents ask for, and it is what most people mean when they say they need to sign a PDF.
It is not a cryptographic signature. It does not carry a certificate, it does not prove who signed or that the document has not changed since, and it will not show up as a validated signature in Adobe Acrobat. If that is what you need, use Sign with certificate, which produces a real PAdES digital signature from your .p12 or .pfx file.
The two tools answer different questions, and picking the wrong one wastes time at the other end. This is the short version.
The document is opened, the signature drawn into it and the file written back, all inside your browser tab. Neither the PDF nor the image of your signature is uploaded, and no third-party script is loaded to handle either.
A signature image is a piece of personal data worth guarding: it is the thing that can be lifted and reused on a document you never saw. Here it is created and used on your machine and goes nowhere else.
Yes, completely, with no account and no watermark on the document. There is no cap on how many documents you sign.
It is a handwritten signature, the same thing you get by signing on paper and scanning. Whether that is enough depends on what has been asked of you. When a certificate, a qualified signature or Adobe validation is named, use Sign with certificate instead.
Yes. Save the image of your signature on your computer and upload it whenever you need it, instead of drawing it again each time.
No. It is drawn or loaded inside your browser, used there, and never sent to a server.
Yes. Place a signature on each page that needs one before downloading the document.
Yes. It becomes part of the page content, so it prints, it survives conversion, and it cannot be dragged away by whoever opens the file.