Document Watermark
Add a real Word watermark to every page of a .docx by writing a header shape.
Office documents Client-side VML header shape + OOXML rels/content types
Tool preview
How to use it
- 01
Drop a .docx file.
- 02
Type the watermark text and pick colour and rotation.
- 03
Download the watermarked copy.
Limitations
- ! The watermark goes into the default header, so documents with a custom first-page header may need a manual tweak.
- ! Very long text is shrunk to the shape width rather than wrapped.
- ! Only .docx is supported; .doc and PDFs need their own tools.
FAQ
Is it an image stamped on the page?
No. It is a VML text shape inside a real header part, the same structure Word writes itself, so it repeats on every page and stays editable.
Can I remove it again?
Yes: in Word, open the header and delete the shape, or remove the header part.
Is the document uploaded?
No.
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
- VML header shape + OOXML rels/content types
- Category
- Office documents
- Network requests
- None while processing