Volume Booster

**Volume Booster Pro** amplifies audio on any website up to 600% — perfect for quiet videos, music, podcasts, and video calls.

**Key Features:**

- Boost volume up to 600% on any tab
- Beautiful circular volume knob with precise slider control
- Quick presets: 100%, 200%, 400%, 600%
- Per-site volume memory — your settings are remembered
- Real-time VU audio meter — see your audio levels
- Bass Boost mode for richer, deeper sound
- Hearing protection warning at 400%+ volume
- One-click mute button
- Shows current tab info (favicon + title)
- Dark theme with sleek, modern design
- No ads, no tracking, no data collection

**How It Works:**

Volume Booster Pro uses the Web Audio API to create a gain node that amplifies audio beyond the browser's default 100% limit. This works with any audio or video element on any website — YouTube, Netflix, Spotify Web, Zoom, and more.

**Bass Boost:**

Enable Bass Boost for enhanced low-frequency response. Uses a professional-grade low-shelf filter at 200Hz for rich, deep bass without distortion.

**Hearing Protection:**

Your hearing matters. Volume Booster Pro shows a clear warning when you exceed 400% volume. We recommend keeping volume at comfortable levels and taking breaks during extended listening sessions.

**Privacy:**

Volume Booster Pro stores only your per-site volume preferences locally on your device. No data is sent to any server. No analytics, no tracking, no accounts required.

**Free & Open:**

Volume Booster Pro is completely free to use with no limitations. If you find it useful, you can support development with a one-time donation.