Diskbit

Sign & Watermark PDF

Draw a signature or stamp a watermark on a PDF. The file never leaves this page.

100% private. Your files never leave your device.

Drag & drop a PDF file here

or browse your device

About this tool

Sign a form without printing it, or mark a file as confidential before you send it. Choose Signature to draw with your finger or mouse, or to upload a picture of your signature. Choose Watermark to put words such as Confidential across the page. Both options run in your browser. Nobody else sees the file.

How to use

  1. 1Drop your PDF onto the box.
  2. 2Pick Signature or Watermark.
  3. 3Pick Signature or Watermark, then drag the stamp to the right spot on the page preview.
  4. 4Click the button and download the stamped PDF.

Frequently asked questions

Is a drawn signature legally binding?

That depends on your country and the document. This tool places a picture of a signature on the file. It does not add a government digital certificate.

Can other people copy my signature from the PDF?

Yes, just as they could from a paper scan. Only sign files you trust, and do not reuse a signature image carelessly.

Is the PDF uploaded?

No. Signing and watermarking happen on your device.

Will the watermark cover the text?

It sits on top with some see-through so the words underneath stay readable. You can change how solid it looks with the slider.