Watermark PDF
Stamp a diagonal text watermark (like DRAFT or CONFIDENTIAL) across every page of a PDF.
Stamp a diagonal, semi-transparent text watermark — DRAFT, CONFIDENTIAL, your name or company — across every page of a PDF. It runs entirely in your browser, so sensitive documents are never uploaded. The text is drawn at 45° with low opacity so the page stays readable.
A visible watermark is a deterrent and a label, not encryption; for genuine restriction you would need password protection, which browser tools cannot add.
Frequently asked questions
How do I add a watermark to a PDF?
Upload the PDF, type your watermark text, and apply it. The text is drawn diagonally at low opacity on every page.
Is a watermark the same as protection?
No. It marks ownership and intent but can be removed. For true restriction you need password protection.
Is my document uploaded?
No, watermarking is done in your browser, so the file stays private on your device.
What should I write?
Keep it short: DRAFT, CONFIDENTIAL, your name, or "© Your Name 2026". Long text looks cluttered at an angle.