Protect & Watermark PDF Online
Add secure password protection or diagonal text watermarks to your PDF pages 100% in-browser.
Drag & drop your PDF file to watermark, or Browse Files
Add diagonal copyright protection text across all pages in 1 click.
Features
- 45-degree diagonal semi-transparent vector watermark overlay on all pages.
- Clean vector text rendering that cannot be easily stripped by basic readers.
- 100% client-side execution protecting confidential IP.
How to Use
- 1Upload the PDF document you want to secure.
- 2Type your desired watermark text (e.g. 'CONFIDENTIAL' or 'DRAFT') and adjust opacity.
- 3Click 'Apply & Download' to save your branded and protected PDF.
Frequently Asked Questions
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