SoundTab - Ambient Soundscapes by Ashish Kumar

SoundTab adds adaptive background sound to every website. It looks at the domain and the actual text on the page and picks a soundscape that fits: news sites get thriller tension, Wikipedia gets library ambiance, social media gets arcade sounds, and more. If it guesses wrong, one click in the popup sets the sound for that site.

All 13 soundscapes (thriller, library, arcade, forest, ocean, cafe, space, rain, night, retro, zen, cave, underwater) are synthesized live with the Web Audio API, so there are no audio files and the extension stays lightweight.

Per-site volume, per-site mute, global mute, and automatic soundscape switching as you browse. Note: browsers block audio until you interact with the page, so click anywhere once after installing.