Tab Volume Control 作者： stupid codes

Control the volume of each Firefox tab independently with advanced features:

✨ Key Features:
• Individual volume control per tab with slider (0-100%)
• Volume Lock - Prevent websites from hijacking your volume settings
• Auto-Level Volume - Automatically normalize loud and quiet audio
• Quick mute/unmute button for instant control
• All tabs overview - See and control volumes from one popup
• Persistent settings - Your preferences saved between sessions

🔒 Volume Lock prevents:
• Websites forcing volume changes without permission
• Ads playing louder than the actual content
• Unexpected volume spikes that damage hearing
• Auto-play videos overriding your preferred volume

📊 Auto-Level normalizes:
• Quiet YouTube videos that are hard to hear
• Overly loud commercials and advertisements
• Inconsistent podcast episode volumes
• Music tracks recorded at different loudness levels

🔐 Privacy & Security:
• Zero data collection - Nothing tracked or transmitted
• No external requests - All processing happens locally
• Local storage only - Settings stored in your browser
• Open development - Clean, readable code

Perfect for:
- Multi-tab browsing with different audio sources
- Protecting your hearing from volume surprises
- Consistent audio experience across websites
- Professional use where audio consistency matters

Technical Features:
- Real-time audio analysis using Web Audio API
- Per-tab volume, lock, and auto-level state management
- Automatic detection of new audio/video elements
- Smooth volume transitions to prevent jarring changes