About the PDF Watermark

The PDF Watermark tool stamps a diagonal text watermark on every page of your PDF — ideal for marking documents as CONFIDENTIAL, DRAFT, or SAMPLE before sharing. Control the text, color, size, and opacity to match your needs.

How to use the PDF Watermark

  1. Drop or select your PDF file.
  2. Type your watermark text.
  3. Adjust opacity, font size, and color.
  4. Click Add Watermark & Download.

Frequently asked questions

Can I choose the watermark text?

Yes — type any text you want, such as CONFIDENTIAL, DRAFT, or your name.

Can I control the opacity?

Yes — adjust the opacity slider from 5% (very faint) to 80% (strong).

Is it free?

Yes, completely free.

Are my files uploaded?

No. Your PDF never leaves your browser.

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