Free online PDF tool
Sign a PDF with your own signature
Signing a document usually means printing it, signing it, scanning it back, and emailing a crooked photograph of a page. This tool skips all of that. You draw your signature with a mouse, trackpad, or finger, then click the spot on the page where it belongs.
The part that matters most here is privacy. Documents that need signing are contracts, agreements, and forms — exactly the papers you would least want sitting on someone else's server. Nothing is uploaded: the page preview, the signature, and the finished PDF are all produced on your own machine.
Open Sign PDFRuns in your browser — your files are never uploaded.
How to Sign PDF
- Select the PDF you need to sign.
- Draw your signature in the box. Use the page arrows to reach the right page.
- Click the page where the signature should sit, drag to fine-tune, and use the size slider to scale it.
- Press "Download signed PDF" to save the signed document.
Frequently asked questions
Is this a legally binding signature?
It produces the same kind of drawn signature as printing and signing by hand, which many jurisdictions accept for ordinary agreements. It is not a cryptographic digital signature with a certificate. For documents with strict legal requirements, check what your situation demands.
Can I sign on a phone or tablet?
Yes, and it is often easier — drawing with a finger or stylus gives a more natural signature than a mouse.
Is my signature stored anywhere?
No. It exists only in your browser for the length of the session and is embedded directly into the PDF you download. Nothing is saved or transmitted.
Can I put the signature on more than one page?
One placement per run at the moment. To sign several pages, run the tool again on the file you just downloaded.
Can I resize the signature after placing it?
Yes. Use the size slider, and drag the signature itself to move it. Nothing is written into the PDF until you press download.