What is PDF Watermark?
Place text such as “CONFIDENTIAL”, “COPY”, or a company name diagonally across the center of every page. Adjust the opacity, size, angle, and color — Japanese, Chinese, and Korean text are supported too.
How to use
- 1
Choose a PDF.
- 2
Set the watermark text, opacity, size, and angle.
- 3
Press “Add watermark” and download the result.
Use cases
Preventing leaks
Stamp internal documents “CONFIDENTIAL” before sharing.
Marking drafts
Mark a draft quote with “DRAFT”.
FAQ
Does it work with non-Latin text?+
Yes. When the text contains Japanese or Chinese, a matching font is downloaded automatically (only the font file is fetched).
Are my files uploaded to a server?+
No. Everything is processed in your browser and files are never uploaded anywhere.