Browser tool

Watermark PDF

Stamp PDF pages with text or an image.

Local processing · No file or password uploads

Choose PDF files

Up to 50MB per file, 100MB total and 100 pages. Malformed or unsupported PDFs are rejected.

Output settings

Page selection (blank = all)

Page numbers start at 1. Order is respected; repeats and invalid ranges are rejected.

Watermark text

Or choose a watermark image

An image takes precedence over text. Text supports your browser fonts, including Chinese.

Opacity 20%

Keep an original copy. Editing may invalidate digital signatures; page copying/layout may not preserve bookmarks, links or form behavior.

How to use

Choose files from your device. They are processed locally, not uploaded.
Adjust settings and file/page order. Generate and inspect the result preview.
Download the result and verify it before printing or sharing. Reset releases local files and results.

Yes. Text is rendered with local browser fonts into a stamp. An optional image takes precedence over text.