Watermark PDF

Stamp text such as CONFIDENTIAL or COPY on PDF pages. Free, no sign-up, files stay on your device.

Choose a PDF fileor drag and drop a file here

🔒 100% private — processing happens in your browser. Nothing is uploaded.

How to use the pdf watermark tool

  1. Choose a PDF file.
  2. Type the watermark text and pick size, colour, transparency and position.
  3. Click Add watermark to download the stamped PDF.

Mark drafts, contracts, price lists or exam papers as CONFIDENTIAL, DRAFT, COPY, SAMPLE or with your company name before sharing them. Choose a large diagonal stamp across the centre, a repeated tiled pattern that is hard to crop out, or a discreet line at the top or bottom of each page. The original text stays selectable and sharp. Processing uses the open-source pdf-lib library in your browser.

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