Add Watermark

Add Watermark — Add text or image watermark to PDF. Free online tool that runs in your browser. No signup or uploads to ThothBox.

About this tool

Add Watermark is a free online utility to add text or image watermark to PDF (related: pdf, watermark). Processing runs locally in your browser — your input is not uploaded to ThothBox.

How to use

  1. Open Add Watermark and add your file (upload or drag and drop).
  2. Set the options that match your goal.
  3. Run the action — processing happens in your browser.
  4. Download or copy the result when it is ready.

FAQ

What does Add Watermark do?

Add text or image watermark to PDF.

Is Add Watermark private?

Yes for typical use: input is processed in your browser and is not uploaded to ThothBox.

Is Add Watermark free?

Yes. It is free to use with no signup required.

Are there file size limits for Add Watermark?

Practical limits depend on your device memory and browser, not a ThothBox server quota.

How do I use Add Watermark?

Open the Add Watermark tool, then open Add Watermark and add your file (upload or drag and drop).

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