PDF Watermark Tool
Add a custom text watermark to every page of a PDF. Control font size, opacity, rotation and position. Runs in your browser. No uploads, free.
📄 PDF & Document Tools
Free
Browser-based
Watermark Use Cases
| Text | Use Case |
|---|---|
| CONFIDENTIAL | Internal documents, NDA materials |
| DRAFT | Work-in-progress documents |
| SAMPLE | Preview copies |
| Your company name | Brand protection |
| DO NOT COPY | Copyright protection |
Technical Notes
The watermark is placed at the center of each page using pdf-lib's Helvetica font. The text is rendered as a vector element, not an image, so it scales perfectly at any zoom level.