loudtube

A static single-page tab audio booster. Captures audio from any browser tab via getDisplayMedia and routes it through a Web Audio GainNode, allowing the volume slider to go up to 30x.

Hosted at: https://abbyslab.github.io/loudtube/loudtube.html

Usage

1. Open your video/audio in another tab
2. On this page, click capture tab audio
3. Select that tab in the prompt and tick Share tab audio
4. Adjust the slider

Limitations

• Cannot exceed system volume — GainNode clips above 1.0 rather than amplifying beyond OS limits. Useful for boosting quiet sources that don't reach system maximum.
• Requires getDisplayMedia permission, which may be blocked by managed browser policies.