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Watermark PDF

Stamp text across every page — great for marking drafts or confidential copies.

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Drop a PDF here, or click to browse

One file at a time.

Stamping pages...
✅
Your watermarked PDF is ready

🔒 Files are processed locally — never uploaded anywhere.

How to add a watermark to a PDF online free

  1. Drop a PDF into the box above.
  2. Type your watermark text and adjust size, opacity, angle, and color.
  3. Click Add Watermark.
  4. Download watermarked.pdf — stamped entirely on your device.

Frequently asked questions

Can I use an image as a watermark instead of text?

Not currently — this tool stamps text only. For a logo or image watermark, use JPG to PDF or Organize Pages to place an image page instead.

Will the watermark show on every page?

Yes — it's stamped across every page of the document automatically.

Is my PDF uploaded to add the watermark?

No — pdf-lib draws the watermark directly onto the PDF in your browser tab.

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