✨ Complete Feature Set 🎮 Video Speed Control

Advanced Speed Control: Adjust playback speed from 0.1x to 16x with precise increments
Custom Speed Presets: Set your preferred default speeds for different content types
Visual Speed Controller: Elegant on-screen overlay with real-time speed display
Speed Memory: Automatically remembers and applies your last used speed to new videos
Per-Website Settings: Different speed preferences for different websites

🔊 Volume Booster & Audio Control

⌨️ Advanced Keyboard Shortcuts

📊 Intelligent Media Tab Management

Ultra-Conservative Tracking: Media tabs persist indefinitely until actually closed
Simultaneous Playback Prevention: Only one tab plays audio/video at a time
Smart Pause Management: Automatic pausing when switching between media tabs
Restart Resilience: Tab tracking survives extension restarts and browser crashes
Network Fault Tolerance: Communication failures don't break media management

🎛️ Professional Options Interface

🔒 Privacy & Security Privacy-First Design

Security Features

📈 Performance & Compatibility Optimized Performance

Browser Compatibility

UME v3.0 integrates and builds upon the excellent work of these open-source projects: 🎬 Video Speed Controller Integration

Original Project: Video Speed Controller by @igrigorik
Repository: https://github.com/igrigorik/videospeed
License: MIT License
Features Integrated: Advanced speed control system, keyboard shortcuts, visual overlay controller
Our Enhancement: Enhanced fullscreen support, per-domain settings, improved UI/UX, and integrated tab management

🔊 Volume Booster Integration

Original Project: Better-Volume-Booster
Developer: @zWolfrost
Features Integrated: Web Audio API volume amplification, gain node management, audio enhancement
Our Enhancement: Per-domain volume memory, popup controls, keyboard shortcuts, safety limits, and seamless integration with speed controls

ABDev

Published Firefox add-on: