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Watermark PDF

Stamp text such as CONFIDENTIAL or DRAFT across every page of a PDF.

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This tool runs in your browser. Nothing is uploaded.

About Watermark PDF

Watermark PDF adds a text stamp on top of every page. You control the words, placement, colour, size and transparency so the page stays readable underneath.

For marking drafts, labelling confidential documents before sharing, or branding documents that leave your organisation.

What it does

  • Diagonal, centred, top or bottom placement
  • Adjustable opacity and colour
  • Watermark scales to each page size

How to use Watermark PDF

  1. Upload a PDF.
  2. Type the watermark text and choose its style.
  3. Select Add watermark.
  4. Download the stamped PDF.

Frequently asked questions

Can someone remove the watermark?

A text watermark is added as page content. Someone with PDF editing software could still edit it, so treat it as a label rather than security.

Which characters can I use?

Letters, numbers and common punctuation in Western European languages. The watermark uses the standard Helvetica font.

Limits and privacy

Text uses the built-in Helvetica font (Latin characters). Image watermarks are not supported yet.

Everything happens on your device, so your content never reaches our server.

Processing speed depends on your device. Files up to 100 MB are supported; very large documents work best on a computer.

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