About this tool
Place a diagonal text watermark on every page locally. The watermark is added as page content and is not access control. Processing uses PDF-lib inside your browser, so the source file is not uploaded to ToolBlur.
How to use
- 1Choose an unencrypted PDF.
- 2Enter the requested pages or option.
- 3Create, verify and download the new PDF.
Benefits
- Browser-side PDF processing.
- No account or upload.
- Original source file remains unchanged.
Use a watermark as communication, not access control
Practical example
Adding “DRAFT — 2026-07-28” across review copies makes their status visible. It does not stop a recipient from copying text, taking screenshots or removing the mark.
Interpreting the result
Choose readable contrast without obscuring essential content, include a useful status or recipient label and inspect pages with dark images or small text before distribution.
Limits and common mistakes
A watermark is not encryption, digital signing, rights management or secure redaction. Confidential files still require controlled access and appropriate document security.
Frequently asked questions
Are PDFs uploaded?+
No. Processing runs locally in a compatible browser.
Can it open password-protected PDFs?+
No. Remove authorized encryption first using appropriate software.