About WatermarkPDF

A privacy-first tool designed to help you add watermarks to your PDF documents quickly, securely, and completely offline.

Our Mission

At WatermarkPDF, we believe that document security shouldn't come at the cost of privacy. Our mission is to provide a simple, fast, and completely private way to add watermarks to your PDF documents. Every file you process stays on your device - we never see, store, or have access to your documents.

100% Private

All processing happens in your browser. Your files never leave your device, ensuring complete privacy and security for sensitive documents.

Instant Processing

No uploads, no waiting, no server delays. Your PDFs are watermarked instantly using advanced client-side processing technology.

High Quality

Preserves the original quality of your PDF documents while adding professional-looking watermarks with customizable positioning and styling.

Free Forever

No subscriptions, no hidden fees, no limits. WatermarkPDF is completely free to use for personal and commercial purposes.

How It Works

WatermarkPDF uses cutting-edge web technologies to process your PDFs directly in your browser:

PDF-lib: Advanced PDF manipulation library for precise watermark placement
Client-side Processing: All operations happen locally in your browser
Modern Web Standards: Built with the latest web technologies for optimal performance
No Server Dependencies: Completely self-contained tool

Privacy Commitment

We take your privacy seriously. WatermarkPDF is designed with privacy by design principles:

No file uploads to our servers
No data collection or tracking
No cookies or analytics on the tool pages
Open source technology you can trust

Get in Touch

Have questions, suggestions, or feedback? We'd love to hear from you. WatermarkPDF is continuously improved based on user feedback to provide the best possible experience for document watermarking.