PDF Tools
Watermark PDF — Add Text Watermark Without Uploading
Stamp a diagonal text watermark — like "CONFIDENTIAL" or "DRAFT" — across every page of a PDF. Processing happens entirely in your browser, so the document never leaves your device and no account is required.
Drop a PDF to watermark
Your files never leave your browser.
Frequently Asked Questions
- Are my files uploaded?
- No. The watermark is applied in your browser with pdf-lib. Your file never leaves your device.
- Can I change the watermark opacity or angle?
- The watermark is rendered at 30% opacity and a 30° diagonal — a readable but non-obstructive default. Custom styling is on the roadmap.
- Can I use an image watermark?
- Not yet — this tool applies a text watermark. Image watermarks are planned.