Add Watermark
Add a customizable text watermark to all or selected pages of a PDF. Your files never leave your device — all processing happens locally in your browser.
Drop your PDF here
or click to choose a file
Your files never leave your device.
The watermark is centered on each page at the given opacity.
Add Watermark stamps a text watermark onto every page of your PDF. You control the text, position, opacity, and rotation. The watermark is permanently embedded in the PDF. The process runs locally in your browser.
How it works
How to use Add Watermark
- 1Drop your PDF. Drag and drop a PDF file, or click to choose one.
- 2Configure the watermark. Enter the watermark text, choose position (center/diagonal), opacity, and rotation angle.
- 3Click Run Add Watermark. The tool stamps the text onto every page using pdf-lib in a Web Worker.
- 4Download the result. The watermarked PDF is offered as a download.
Features
What this tool does
- Text watermark on every page
- Adjustable opacity (0–100%)
- Adjustable rotation angle
- No upload — runs entirely in your browser
Limitations
Things to know
- Text watermarks only (image watermarks are not supported in this version)
- The watermark is permanently embedded (not a removable layer)
- Watermark font and size use a built-in default
FAQ
Frequently asked questions
Can I use an image as a watermark?
This version supports text watermarks only. Image watermark support may be added in a future update.
Is the watermark removable?
No. The watermark is permanently drawn onto each page. It is not a separate layer that can be toggled off. This is intentional for document protection.
Can I watermark only specific pages?
This version applies the watermark to all pages. Per-page watermarking may be added in a future update.
What font is used?
A built-in standard font is used for the watermark. Custom font embedding is not supported in this version.