Add watermark to PDF
Stamp a diagonal text watermark across every page.
This tool runs entirely in your browser. Your file is never sent anywhere.
Type your watermark text (e.g. CONFIDENTIAL or DRAFT), pick the opacity, and every page gets a clean diagonal stamp — processed locally.
Frequently asked questions
Can I use Arabic text in the watermark?
Not yet — the built-in PDF fonts cover Latin letters and numbers. Arabic watermark support with embedded fonts is on our roadmap.
Can the watermark be removed later?
The watermark becomes part of the page content. Keep your original file — it is never modified.