Blue Light Filter - Cross-Browser Eye Protection & Sleep Enhancement

Protect Your Eyes & Improve Sleep with Advanced Blue Light Filtering

Blue Light Filter is a powerful, cross-browser extension that reduces eye strain and promotes better sleep by intelligently filtering harmful blue light from your screen. Whether you're working late, reading, or browsing, our advanced filter creates a warmer, more comfortable viewing experience that adapts to your daily routine.

🌟 Key Features

Smart Scheduling System
- Automatic activation based on your daily schedule
- Real-time transitions - no page refresh needed
- Overnight support for schedules like 8 PM to 6 AM
- Instant adjustments when entering/leaving scheduled times

Advanced Customization
- Precision intensity control (0-100%) with real-time preview
- Optimized color algorithm for effective blue light reduction
- Smooth transitions with elegant fade effects
- Multiple filter modes for different activities

Cross-Browser Compatibility
- Universal support - Chrome, Firefox, Edge, Safari
- Manifest V2 & V3 compatibility for future-proofing
- Seamless performance across all supported browsers
- Consistent experience regardless of your browser choice

Enhanced User Experience
- First-time setup guidance with helpful installation alerts
- Accessibility optimized with full keyboard navigation
- Dark mode support that adapts to your system theme
- Lightweight design that won't slow down your browsing

Professional Features
- Website compatibility works on all sites including complex web apps
- Frame support for embedded content and iframes
- SPA navigation handles single-page applications perfectly
- Memory efficient with automatic cleanup and optimization

🎯 Perfect For

Night Workers & Students
Reduce eye strain during late-night work sessions and improve sleep quality by automatically filtering blue light during evening hours.

Digital Professionals
Developers, designers, and content creators who spend long hours in front of screens can maintain eye comfort throughout their workday.

Health-Conscious Users
Anyone looking to reduce digital eye strain, improve sleep patterns, and maintain healthier screen habits with minimal effort.

Accessibility Users
Full keyboard navigation, screen reader support, and high contrast compatibility make this extension accessible to all users.

🔧 How It Works

1. Install & Setup: Quick one-click installation with guided first-time setup
2. Customize Settings: Adjust filter intensity and set your preferred schedule
3. Automatic Operation: Filter activates/deactivates based on your schedule
4. Real-Time Adjustments: Changes apply instantly without page refreshes
5. Cross-Device Sync: Settings sync across all your devices (where supported)

🚀 What's New in Version 3.0

- ✅ Real-time scheduling - automatic activation without page refresh
- ✅ Cross-browser support - works on Chrome, Firefox, Edge, Safari
- ✅ Enhanced accessibility - full keyboard navigation and screen reader support
- ✅ Improved performance - optimized overlay rendering and memory usage
- ✅ Better error handling - graceful fallbacks for all operations
- ✅ Dark mode support - adapts to your system preferences
- ✅ First-time user guidance - helpful setup instructions and alerts

🛡️ Privacy & Security

- Minimal permissions - only requests necessary access
- Local storage - your settings stay on your device
- No tracking - we don't collect or share your data
- Open source friendly - transparent development practices

💡 Why Choose Blue Light Filter?

Unlike basic blue light filters, our extension offers:
- Scientific color algorithms for optimal blue light reduction
- Smart automation that works with your natural rhythms
- Professional reliability with enterprise-grade error handling
- Future-proof design with cross-browser and manifest compatibility
- Accessibility first approach ensuring everyone can use it comfortably

🎨 Technical Excellence

- Advanced CSS filtering with GPU acceleration support
- Cross-browser API compatibility using feature detection
- Responsive design that works on all screen sizes
- Performance optimized with debounced updates and efficient rendering
- Memory management with proper cleanup and resource handling

📱 Installation & Support

Easy Installation:
1. Click "Add to Chrome" (or your browser's equivalent)
2. Follow the brief setup guide
3. Refresh existing tabs to activate the filter
4. Customize your settings and schedule

Browser-Specific Instructions:
- Chrome/Edge: Use the main extension file
- Firefox: Compatible with both desktop and mobile versions
- Safari: Works with Safari 14+ on macOS and iOS

🌍 Accessibility & Internationalization

- Screen reader compatible with proper ARIA labels
- Keyboard navigation for all functions
- High contrast support for visually impaired users
- Responsive design adapts to different screen sizes and zoom levels

📞 Support & Feedback

We're committed to providing the best blue light filtering experience. Our extension is actively maintained with regular updates and improvements.