Volume Up! 600 by zura

Volume Up! 600 lets you amplify audio and video volume up to 600% on any browser tab.

Features:
- Volume slider from 0% to 600% with step control
- Mute and reset buttons for quick volume control
- Badge indicator showing current volume level on the toolbar icon
- Keyboard shortcut Ctrl+Shift+6 to open popup
- Keyboard keys 0-6 to set volume instantly (0%–600%)
- Arrow keys and mouse wheel for fine volume adjustment
- Automatically remembers your volume setting across sessions
- Shows a list of tabs currently playing audio for quick tab switching
- Uses Web Audio API (GainNode) for clean audio amplification
- Lightweight, no tracking, no data collection, no external connections

This extension is completely open source, privacy-friendly, and does not collect or transmit any user data.