Watermark PDF

Stamp text or an image watermark over every page.

Processed locally in your browser using PDF.js and pdf-lib. Your file is never uploaded.

Overview

Overlays a text or image watermark on every page — with control over opacity, rotation, size and position.

How to use it

1Upload a PDF.
2Type watermark text (or upload a PNG logo) and set opacity, angle and position.
3Download the watermarked PDF.

How it works

The watermark is drawn on top of each page with pdf-lib. Text uses the standard Helvetica font; images are embedded as PNG.

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