PDF tools

Watermark PDF

Add a diagonal text watermark, or an image watermark in the centre, a corner or tiled, with opacity control, across every page of a PDF.

Files you choose stay on your device — they are not uploaded to Tools99.

Workspace: 1. Add files2. Ready3. Working4. Done — download

How this workspace works
  1. Choose a PDF file.
  2. Pick a text watermark, or an image watermark with a position and opacity.
  3. Download the file with the watermark on every page.

Your file never left this device, so there is no server copy to delete. Download again, start over, or continue with a related tool below.

How to use Watermark PDF

  1. Choose a PDF file.
  2. Pick a text watermark, or an image watermark with a position and opacity.
  3. Download the file with the watermark on every page.

A good use for this

Marking drafts, samples, or confidential copies so a reader can see at a glance how they may be used.

Limits

A watermark is a visible mark drawn over page content, not copy protection — the text underneath can still be read, and a determined reader can remove a watermark from a PDF. Image marks are sized in proportion to page width and cannot be resized here; text-watermark font and size choices are not part of this tool.