LoftPDFAdd Watermark
Add a custom text watermark to every page of a PDF.
Files are processed entirely in your browser and never uploaded to a server.
How to use
- 1
Upload a PDF file
- 2
Enter the watermark text and adjust size, opacity and more
- 3
Click "Add watermark" and download the result
FAQ
Does the watermark support non-Latin characters?
Yes. The watermark is rendered with your browser's built-in fonts, so common Chinese, Japanese and other characters display correctly.
Can someone remove the watermark?
The watermark is drawn directly into the page content, so it can't be removed like a layer — but it can't prevent screenshots or being covered by other content.