PDF Watermark

Add text watermarks to PDF files

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What it does

The PDF Watermark tool adds custom text watermarks to every page of your PDF document. Watermarking is essential for protecting intellectual property, marking documents as drafts, confidential, or proprietary. The tool renders your chosen text diagonally across each page with semi-transparent styling that is clearly visible without obscuring the underlying content.

How to use it

  1. Upload your PDF file by dragging it into the upload area or clicking to browse.
  2. Enter your watermark text — for example 'CONFIDENTIAL', 'DRAFT', or your company name.
  3. Adjust the font size to match your document's layout.
  4. Click 'Apply Watermark' to add the text to every page.
  5. Download the watermarked PDF — your original content remains untouched beneath the overlay.

Key features

Why it helps

Protect your documents from unauthorized distribution. Mark drafts clearly to prevent confusion. Add branding to client deliverables. All without expensive PDF editing software.

Frequently asked questions

What is this tool?

Adds text watermarks across all pages of your PDF document to protect ownership and prevent unauthorized use.

Can I customize the watermark?

Yes, you can enter any text and adjust font size. The watermark is rendered semi-transparently across each page.

Is this tool free?

Yes, completely free with no limits. All processing happens in your browser.

Will it affect the PDF content?

No, the watermark is overlaid on top of existing content without modifying it.

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