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Watermark PDF Online Free — PrivaTools

Add watermark to PDF online for free. Apply text or image watermarks to every page with full control over opacity, position, rotation, and font size. Protect your documents from unauthorized use. No sign-up needed.

Watermark PDF is one of 105 free file tools on PrivaTools. All processing happens on our servers with zero-knowledge architecture — your files are never stored, never read, and never shared with third parties. No account required.

How to Watermark PDF with PrivaTools

  1. Upload the PDF — Select a PDF up to 500 MB that needs a watermark.
  2. Configure the watermark — Enter text (e.g. 'CONFIDENTIAL') or upload an image. Set opacity, font size, color, and position (diagonal, center, header, or footer).
  3. Apply and download — Click Apply. Every page receives the watermark, and the output PDF is ready to download.

Frequently Asked Questions

Can I use an image as a watermark?

Yes. Upload a PNG or JPG image (logos work well). Set the opacity so the watermark is visible but does not obscure the document content.

Is the watermark applied to every page?

Yes. The watermark is applied to all pages. If you need it on specific pages only, split the PDF first, watermark those pages, then merge.

Can someone remove the watermark?

The watermark is flattened into the page content. It cannot be removed with a simple toggle, though advanced PDF editing tools could paint over it.

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