Site Volume од rinzler

Site Volume lets you give each website its own sound level. YouTube louder, a noisy news site quieter — set it once and it stays that way for that site.

Features
- Per-site volume from 0% to 600%
- Type an exact percentage or use the slider and quick presets (25, 50, 75, 100 … 600)
- Bass and treble adjustment (±15 dB)
- Built-in limiter to reduce distortion when boosting
- Toolbar badge shows the current level for the site
- List of all sites with custom settings, reset any of them in one click
- Clean, minimal interface

How to use
1. Open a site with audio or video and start playback.
2. Click the Site Volume icon.
3. Drag the slider, pick a preset, or click the number and type a value.

Good to know
- Pages that were open before installing the add-on need to be reloaded once.
- Some sites load media from other domains without CORS. On those, the add-on can only lower the volume, not boost it.

Privacy
The add-on does not collect or send any data. Settings are stored locally in your browser.

Source code: https://github.com/Shamsaev/site-volume