Watermark PDF

About this tool

Add professional text watermarks to any PDF with full control over the appearance. Set custom text, font size, color, opacity, angle, and position — then download your watermarked PDF instantly.

Key features

• Live preview

  See your watermark text styled in real time before applying.

• Full customization

  Control text, font size, color, opacity, rotation angle, and position.

• All pages stamped

  Watermark is applied to every page of your PDF consistently.

• Secure processing

  Your PDF is processed securely and never stored on our servers.

Frequently asked questions

Will the watermark be permanent?

Yes. The watermark is embedded into the PDF content and cannot be easily removed.

Can I set the opacity of the watermark?

Yes — use the Opacity slider to set how transparent the watermark appears. 30% is a common setting for "CONFIDENTIAL" stamps.

What fonts are used for the watermark?

The watermark uses Helvetica Bold for maximum legibility. Custom font selection may be added in a future update.

Can I watermark only specific pages?

Currently the watermark is applied to all pages. Page-range control will be available in a future update.