Watermark PDF
Add a text watermark to every page of a PDF. 100% processed in your browser.
⚠️ Limit: File must be under 25MB.
Frequently Asked Questions
Is it safe to watermark private PDFs here?
Yes. Everything happens inside your browser using JavaScript — your file is never uploaded to a server.
Does the watermark appear on every page?
Yes. The watermark is drawn on top of every page's existing content so it remains visible even on image-heavy PDFs. Use the opacity slider to control how much the original content shows through.
Does this work on password-protected PDFs?
Not currently — remove password protection first if your PDF requires one to open.