Add Watermark

Stamp a text watermark across the pages of your PDF.

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Files are processed locally: nothing is uploaded.

Add Watermark to PDF

Add a text watermark to PDF pages while keeping the file on your device.

  • Files stay on your device.
  • Processed locally in your browser.
  • No uploads. No storage.

Add Watermark places text on all pages or a custom page range. The live preview shows which pages will be stamped.

Choose horizontal, diagonal, or tiled layouts, then adjust size, opacity, color, and position where the selected layout supports it.

What you can do

  • Enter custom watermark text and choose a preset or custom color.
  • Control layout, position, size, and opacity.
  • Limit the watermark to a selected page range.

Before you start

  • VaultPDF currently adds text watermarks, not image or logo watermarks.
  • Watermarks become part of the downloaded PDF's visible page content.
  • The tool does not automatically avoid existing text, images, or annotations.

How it works

  1. Choose the PDF you want to watermark.
  2. Enter watermark text and choose simple appearance options.
  3. Apply the watermark and download the updated PDF.

Common questions

What type of watermark can I add?

VaultPDF currently focuses on text watermarks with simple placement and appearance options.

Does watermarking upload my PDF?

No. The watermark workflow runs locally in your browser for core processing.