PDF Protect

A free, open-source web application for adding watermarks to PDF documents entirely in your browser. All processing happens locally on your device with no uploads, accounts, or data retention.

Features

• 100% Client-Side Processing - Your PDFs never leave your device
• Drag & Drop Interface - Simple, intuitive file upload
• Customizable Watermarks - Full control over text, styling, and positioning
• Real-Time Preview - See changes instantly before downloading
• Page Range Support - Apply watermarks to specific pages or ranges
• GDPR Compliant - No data collection, tracking, or server communication
• Open Source - Full transparency with publicly available code

Watermark Customization

• Text Content - Add any custom text (up to 50 characters)
• Fonts - Choose from Helvetica, Times New Roman, Courier, Arial, and more
• Styling - Adjust size, color, and opacity
• Positioning - Set rotation angle and precise X/Y offsets
• Tiling - Option to repeat watermark across the page with custom spacing
• Page Selection - Apply to all pages or specific page ranges (e.g., "1-5, 8, 10-12")

Quick Start

1. Open the application in your web browser
2. Drag and drop a PDF file or click to browse
3. Customize your watermark settings
4. Preview the result
5. Download your watermarked PDF

Technical Details

• Frontend Only - Pure HTML, CSS, and JavaScript
• PDF Processing - Built with PDF-lib for client-side PDF manipulation
• File Size Limit - 50 MB maximum
• Browser Compatibility - Modern browsers with ES6+ support

Live Demo

Try it now: PDF Protect

Project Structure

├── index.html         # Main application interface
├── app.js             # Core JavaScript functionality
├── styles.css         # Application styling
├── site.webmanifest   # PWA manifest
└── favicon files      # App icons

Development

To run locally:

1. Clone the repository:

   git clone https://github.com/ToritoIO/PDF-Protect.git
   cd PDF-Protect

2. Serve the files using any HTTP server:

   # Using Python 3
   python3 -m http.server 8000
   
   # Using Node.js
   npx serve .
   
   # Using PHP
   php -S localhost:8000

3. Open http://localhost:8000 in your browser

Contributing

Contributions are welcome! Please feel free to submit issues, feature requests, or pull requests.

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

This project is open source and available under the MIT License.

Links

• Live Application
• GitHub Repository
• Report Issues

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Made with ❤️ for privacy-conscious PDF processing