PDF tools

Add watermark to PDF✓

Add a text watermark to PDF pages with configurable opacity, color, rotation, position and a single or repeated layout.

Tools will load when you run.

The watermark is added on top of the page. Text is fitted to the page when needed; original text stays selectable. Review the downloaded PDF before sharing.

How to use Add watermark to PDF

  1. Choose your PDF.
  2. Upload a PDF, enter your watermark text and choose all pages or a range such as 1,3-5. Use the position preview to adjust the layout.
  3. Download the watermarked PDF. Source text stays selectable and the original file is unchanged.

Formats and requirements

Input formats
PDF
Output
PDF
Availability
Free in your browser and through the CLI
Files per operation
1
Browser file limit
32 MiB per file, 32 MiB total

What to expect

Adds a configurable text watermark to all or selected pages, retaining source text and graphics. Supports Western European text, single or repeated layout, rotation and opacity. The original file is unchanged.

Do my files leave my device?

No. Thanks to advanced file-processing technology, your files are processed directly on your device, inside your browser. OneKit does not receive your input files or results. Required public processing libraries may download when you first use the tool.

File privacy and local processing →

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