Volume Booster Ultra by zenderman_
Amplify any tab's audio up to 1000% with crystal-clear sound Upto 600%, smooth volume transitions, and intuitive one-click controls.
Available on Firefox for Android™Available on Firefox for Android™
Extension Metadata
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About this extension
Boost your audio up to 1000%! Perfect for quiet videos, music, podcasts, and streams.
Features:
- 🔊 Amplify volume up to 10x (1000%)
- 🎚️ Smooth volume slider with real-time control
- ⚡ Quick presets: 100%, 200%, 400%, 600%, 800%, 1000%
- 🔄 Remembers your settings
- 🎵 Works on YouTube, Netflix, Spotify, and all websites
- 📱 Supports Firefox Desktop & Android
How to use:
1. Click the extension icon
2. Toggle ON to activate
3. Adjust the volume slider or use presets
Safe & Private:
- No data collection
- Works entirely offline
Ideal for low-volume videos, hearing accessibility, or when your speakers just aren't loud enough!
Features:
- 🔊 Amplify volume up to 10x (1000%)
- 🎚️ Smooth volume slider with real-time control
- ⚡ Quick presets: 100%, 200%, 400%, 600%, 800%, 1000%
- 🔄 Remembers your settings
- 🎵 Works on YouTube, Netflix, Spotify, and all websites
- 📱 Supports Firefox Desktop & Android
How to use:
1. Click the extension icon
2. Toggle ON to activate
3. Adjust the volume slider or use presets
Safe & Private:
- No data collection
- Works entirely offline
Ideal for low-volume videos, hearing accessibility, or when your speakers just aren't loud enough!
Rated 5 by 3 reviewers
Permissions and data
Required permissions:
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Version
- 2.0.0
- Size
- 4.19 MB
- Last updated
- 17 days ago (Dec 4, 2025)
- Related Categories
- License
- Mozilla Public License 2.0
- Version History
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