Sign PDF

The built-in viewer offers three ways: draw it freehand with a mouse, trackpad, or finger; type your name and pick a signature font; or upload an image of your handwritten signature. Then click the page where it belongs and drag or resize it into place.

Yes. You can place as many signatures as you need on any pages of the document, so you can initial each page of an agreement and sign the last one in the same session.

With flattening on, the signature is permanently merged into the page content so it can't be moved or deleted in another viewer. With it off, the signature is saved as an annotation that compatible viewers can still edit. Turn it on before sending a signed document to someone else.

It places an image of your signature on the page, which is widely accepted for everyday forms, NDAs, and agreements, but it carries no cryptographic proof of who signed. Whether it's binding depends on your jurisdiction and the agreement. If you need a verifiable, certificate-based signature, use Digital Signature.

A PNG with a transparent background gives the cleanest result because the page shows through around the strokes. An image with a solid white background will cover whatever sits underneath it.

This tool is built for placing signatures. If the document has fillable fields, complete them in Form Filler first, download the result, then sign it here.

Yes. The viewer accepts touch input, so you can draw your signature with a finger or stylus, which often gives a more natural result than a mouse.

No. The viewer, the signature tools, and the save step all run in your browser, so the PDF and your signature image never leave your device.