Watermark PDF

Stamp a text watermark across your PDF — centered or repeated over the page.

Runs 100% in your browser. Your files are not uploaded to any server.

How to use Watermark PDF

  1. Drop a PDF into the box.
  2. Type your watermark text, such as CONFIDENTIAL or your company name.
  3. Adjust size, transparency, angle, color, and choose centered or tiled.
  4. Click “Add watermark” and download the PDF.

Frequently asked questions

Can I write the watermark in Chinese, Japanese or Arabic?

Yes. Any language and emoji are supported.

Can I watermark only some pages?

Yes. Type the page numbers, for example 1-3, 7. Leave it empty to watermark every page.

Is Watermark PDF free?

Yes. Watermark PDF is free to use with no sign-up and no watermark.

Are my files uploaded to your server?

No. All processing happens locally in your browser using JavaScript and WebAssembly. Your files never leave your device, which also makes it fast and private.

Does it work on my phone?

Yes. It works in any modern browser on Windows, Mac, Linux, Android and iPhone. Very large files may be slow on older phones.

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