Stamp a watermark across your PDF
Add a text watermark — like Confidential, Draft or a company name — over every page of your PDF. Set the opacity, rotation angle, font size and colour, and choose a single centred stamp or a tiled pattern. Everything runs in your browser; your file is never uploaded.
Options you control
- Text — any short label or name.
- Opacity — from a faint background tint to a bold overlay.
- Angle — classic 45° diagonal, horizontal, or anything in between.
- Colour & size — match your branding or keep it subtle grey.
- Single or tiled — one centred mark, or repeated across the whole page.
A live preview of the first page shows the result before you download.
Honest about what a watermark is
A watermark is a visual deterrent, not a security feature. Because it lives in the page content, it could be removed with other software — like every client- or server-side watermark tool. Use it to signal status (draft, confidential, sample), not to lock a file.
Private by default
The watermark is drawn into your PDF locally with an open-source library (pdf-lib). Nothing is sent to a server, so confidential drafts and internal documents never leave your device — it even works offline.