Add Watermark to PDF
Stamp text like DRAFT or CONFIDENTIAL across every page.
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Stamped on your device · nothing is uploaded
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Add a PDF to stamp text across every page.
Private by design. This tool runs entirely in your browser. Your file is processed on your own device and is not uploaded by DO101.
About the Add Watermark to PDF
Add a text watermark with the colour, size, opacity and angle you choose. It is drawn into every page of a new copy of the document, so it travels with the file.
How to use it
- 1Add your PDF.
- 2Type the watermark text and adjust colour, size and opacity.
- 3Apply it and download the stamped PDF.
What you get
- Any text up to 60 characters
- Colour, size and opacity control
- Diagonal or horizontal
- Applied to every page
- Runs in your browser
Frequently asked questions
Can the watermark be removed?
A determined person with the right software can remove any visual watermark. Treat it as a clear label of intent, not as security.
Why are non-Latin characters not working?
The watermark uses the standard Helvetica font built into every PDF reader, which only covers the Latin alphabet. Embedding a font for other scripts is on the roadmap.
Can I use an image as the watermark?
Not yet — this tool does text only. Image watermarks are planned.
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