PDF Watermark
Add a text or logo watermark to every page of a PDF in a single pass, with full control over position, color, font, size, rotation and opacity, from fully visible branding to a barely-there overlay. Choose “Tiled (repeat)” to stamp a diagonal, repeating pattern across each page, similar to a classic “CONFIDENTIAL” document watermark, with text automatically angled for that effect. Watermarking runs entirely in your browser using pdf-lib, so your PDF is never uploaded to a server or stored anywhere.
Opacity: 35%
CONFIDENTIAL
Rotation: -45°
Frequently asked questions
Does the watermark get added to every page?
Yes, the same watermark (text or logo), position and opacity is applied to every page of the PDF in one pass.
Can I tile a “CONFIDENTIAL” stamp diagonally across pages?
Yes, choose “Tiled (repeat)” as the position, text watermarks are automatically angled when tiled, similar to how many document watermarks look.
Is my PDF uploaded to a server?
No, watermarking happens entirely in your browser using pdf-lib. Your file never leaves your device.