Add Watermark to PDF
Stamp every page of your PDF with a custom text or image watermark. Control the position, rotation, opacity, and style — all processed directly in your browser with pdf-lib.
Upload PDF File to Add a Watermark
Drag & Drop Your PDF
or click to browse your files
Maximum file size: 100MB
Watermarks are stamped directly in your browser — your file never leaves your device.
Watermark Added Successfully!
How to Add a Watermark to a PDF
Three steps to a watermarked PDF
Upload Your PDF
Select or drag a PDF file — thumbnails are generated immediately in your browser.
Configure the Watermark
Type your watermark text (or upload an image), then set the position, opacity, rotation, and color.
Download the Watermarked PDF
The watermark is drawn on every page with pdf-lib in your browser, then downloaded instantly.
Why Use Our Add Watermark Tool
Flexible watermarking without leaving your browser
Live Preview
Every setting change updates the sample page preview and the thumbnail overlays instantly — no guesswork before exporting.
Text & Image Watermarks
Stamp a word like CONFIDENTIAL or embed your own logo as a transparent overlay on every page.
Browser-First Processing
All watermark drawing happens locally with pdf-lib. Your document never leaves your device.
Fully Customizable
Control font size, color, opacity, rotation, and position to get exactly the look you need for your document.
Frequently Asked Questions
Common questions about adding watermarks to PDFs