Can anyone edit my signature out afterwards?

The signature becomes part of the page content, so it can't simply be toggled off — but like any visual element it could be edited by someone with the right tools. That's true of any image-based signature, including scanned paper ones.

Is the Sign PDF tool free?

Yes — it's free with no sign-up, no watermark added to your file, and no daily limit. Files are processed on demand and never stored on our servers.

Sign PDF

Add your signature to a PDF. Draw it with a mouse or finger, or upload an image of it, then drag it into place on the page you want.

Drop the PDF you need to signor click to browse — JPG, PNG, WebP, GIF, TIFF or AVIF, up to 25MB

Your file is processed on our server and deleted the moment your download is ready — never stored, and cleared within the hour at the very latest.

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Why use this tool

Draw your signature directly, or upload a PNG or JPG
Place it on any page and drag to position
Resize until it looks natural against the document
Files are processed on demand and never stored

How it works

1Upload the PDF you need to sign.
2Draw your signature or upload an image of it.
3Drag it into position on the right page.
4Press Sign and download.

Sign PDF — frequently asked questions

This adds a visible image of your signature, which is what most everyday agreements ask for. It is not a cryptographic digital signature with a certificate. If a contract specifically requires a certified or qualified electronic signature, use a service built for that.

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