Add watermark — leaving your mark

How to use this tool

1. 1

   Add a PDF

   Drop the PDF you want to watermark.

2. 2

   Choose text or image

   Type watermark text or upload a PNG logo, then set opacity, angle and size.

3. 3

   Apply

   The watermark is composited onto each page on your device.

4. 4

   Download

   Save the watermarked PDF.

Frequently asked questions

Can I make the watermark subtle instead of a bold stamp?

Yes. Lower the opacity slider — at 10–20% the watermark reads as a faint background behind your content.

What image formats can I use for an image watermark?

PNG (with transparency) or JPG.

Are my files uploaded?

This runs entirely in your browser — the file is never uploaded to a server.