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Watermark PDF
Add a diagonal text watermark to every PDF page with adjustable opacity.
How to use Watermark PDF
- Choose a PDF from your device.
- Set the page range or output options.
- Run the tool and download the result.
What to expect
Use a short label such as DRAFT or SAMPLE. The watermark is visible text, not access control, and can be removed by an editor. Standard Latin text is supported; check your exported document before sharing.
Limits and privacy
One PDF up to 40 MB. Export up to 50 pages at a time. Password-protected PDFs are not supported. Files stay on your device.
Common questions
Does this change my original PDF?
No. The tool creates a new download and leaves your original file unchanged.
Can I process a protected document?
Password-protected files are not supported. Use an unlocked copy you are authorized to edit.