Local browser tool
Watermark PDF
Add a configurable text watermark to selected PDF pages on your device.
● Selected files stay on this deviceChoose PDF file
Drop a file here or browse your device
Steps
How to use Watermark PDF
- Choose a PDF.
- Enter text and adjust appearance and page range.
- Download and inspect every selected page.
Worked example
Mark a review draft
Use DRAFT, 22% opacity, −35° rotation and all pages.
Result: A diagonal grey DRAFT notice appears over each page.
Supported
What this tool handles
- Opacity from 5% to 80%
- Rotation and five positions
- Selected page ranges
Not supported
Important limitations
- Image or logo watermarks
- Preventing screenshots or editing
- Removing existing marks
Operational limits
- Text watermarks only
- Latin text and common punctuation
- A watermark is a visual notice, not access control
Troubleshooting
Common problems
The mark is hard to read
Increase opacity or size, or move it to the centre.
Characters are rejected
Use Latin text and common punctuation supported by the built-in font.
Questions
Watermark PDF FAQ
Does it stop copying?
No. It communicates status but does not encrypt the PDF.
Does it sit behind content?
This release draws it over existing content so it remains visible.
Learn before converting