Photocopy Watermark
Stamp a copy of a document with the statement that it is valid only for a specific use.
Redaction & masking Client-side Canvas compositing
Tool preview
How to use it
- 01
Drop the document scan.
- 02
Fill in the purpose, recipient and date.
- 03
Apply and download.
Limitations
- ! The watermark is burned into the image; the original scan is unchanged.
- ! Dense watermarks can make small print unreadable.
FAQ
What should the watermark say?
Purpose, recipient and date, for example: for archive only / Acme Ltd / 2026-11-14.
Does this work on a PDF?
This page works on images; convert the PDF page to an image first.
Can the watermark be removed?
It is blended into the pixels, so removal would visibly damage the document.
Files never leave your device
Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.
Technical details
- Processing
- Client-side
- Implementation
- Canvas compositing
- Category
- Redaction & masking
- Network requests
- None while processing