Volume Booster 300 by outoftheJack

Control the volume of any tab with precision — from mute to 300% boost.

Features:
- Boost audio up to 300% using the Web Audio API
- Quick presets: Mute, 100%, 150%, 200%, 250%, 300%
- Fine-tune with the slider
- Popout window — keep the controls open while you browse
- Per-site volume saved automatically on this device
- Light/dark theme toggle
- Works on all audio and video elements, including dynamically loaded media
- No data collection, no external connections