PDF WATERMARK
PDF watermark, text or image, tiled.
Add text or image watermarks to PDF pages with adjustable size, colour, opacity, angle and spacing. Processed locally, nothing uploaded.
Drop or choose PDF
One or multiple PDF files supported
Everything runs locally in your browser
Watermark type
Position & opacity
Preview
The preview renders live with current settings; the exported PDF is authoritative.
What can this tool do?
Add anti-sharing or brand watermarks to PDFs: text watermarks (Chinese supported) or image watermarks (logos), with adjustable colour, font size or image width, opacity, rotation and tiling spacing. A spacing above zero tiles the watermark diagonally across the page; zero places a single one in the centre. Choose the first page only or every page, and put the watermark above or below the content. The preview renders live and everything runs locally.
FAQ
Does the text watermark support Chinese?
Yes. The text is first rendered with a system font into a transparent image and then embedded in the PDF, so Chinese, Latin and symbols all display correctly without relying on built-in PDF fonts.
Are my files uploaded?
No. Parsing and stamping happen in your browser; files never leave your device.