Your PDF

Your original stays on this device and is never overwritten.

Options

Watermark
Strength
Position
Angle

Choose one PDF to begin.

File limits and compatibility
  • One PDF, up to 32 MiB and 1,000 pages. The text is one line of 1 to 80 characters.
  • The text uses Helvetica, Times, or Courier, from 8 to 96 points, in gray, ink, or red.
  • The mark is drawn onto the existing pages. It does not flatten annotations or sign the file.
  • An image watermark is not part of this tool.

How to use Watermark PDF

  1. Select Choose a PDF.
  2. Type one line of watermark text.
  3. Set the font, size, color, position and the pages to mark.
  4. Select Add watermark, then Download watermarked PDF.

What happens to your file

Your file is processed by pdf-lib in a worker inside this browser tab. This page's code and assets come from this site. The file, its name and its contents are not sent to Kitolune or anyone else, and a browser test for this tool fails if a run makes a cross-origin or non-GET request.

How local processing works

Common questions

Can someone remove the watermark?

Possibly. The mark is drawn onto the existing pages, but this does not flatten, sign or lock the file.