Volume Booster от Rama Vats

Volume Booster is a lightweight browser extension that amplifies the audio of any HTML5 video or audio element on web pages. Whether you're watching a quiet YouTube video, joining a call with low volume, or streaming content with poor audio levels, this extension lets you boost the volume up to 600% - far beyond the default browser limits.

Features:
- Boost volume up to 600% with a sleek slider interface
- Works on all HTML5 audio and video elements
- 100% privacy-focused - zero data collection, no tracking, no analytics
- Per-tab volume memory - your settings save for each tab
- Beautiful dark mode UI with neon accents
- Completely open source

Perfect for watching quiet videos, online meetings, podcasts, and streaming content.