Watermark PDF

Stamp your own text diagonally across every page.

FREE TOOL · NO SIGN-UP · PRIVATE BY DESIGN
🔒 Your files are processed in your browser only — they are never uploaded to any server.

Choose a PDF to see how many pages it has.

Pick a PDF, type your watermark text, then stamp.

💧 How to Use This Watermark PDF Tool

  1. 1.Choose a PDF. Pick any PDF file from your device.
  2. 2.Type your watermark. A word like CONFIDENTIAL, DRAFT or your company name works best.
  3. 3.Set the opacity. Around 30–50% keeps the document readable while marking it clearly.
  4. 4.Download the result. The watermarked PDF downloads as watermarked.pdf; your original file stays untouched.
  5. 5.Private by design. Everything happens inside your browser, so your documents never leave your device.

❓ FAQ

Where does the watermark appear?

Diagonally across the center of every page, so it is visible but does not hide the whole document. Use the opacity slider to make it faint or bold.

What opacity should I use?

Around 30–50% keeps the document readable while marking it clearly. 100% is fully solid and may cover text underneath.

Are my PDFs uploaded anywhere?

No. Your files are processed in your browser only — they are never uploaded to any server.

Is this watermark PDF tool free?

Yes — 100% free, no sign-up, no extra watermark added beyond your own text.

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