500% Volume Booster av Minebom55

Boost webpage audio and video volume beyond 100% using the Web Audio API.

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🔊 Volume Booster — Firefox Extension

Push your browser audio beyond the default 100% limit — up to 500% — using the Web Audio API.

Firefox caps webpage volume at 100% natively. Volume Booster breaks that ceiling by routing all audio and video elements through a GainNode, letting you crank quiet tabs, videos, or music players to levels that are actually audible. It works on YouTube, Spotify Web, SoundCloud, and any other site that uses HTML5 <audio> or <video> elements.

✨ Features

🎚️ Volume slider from 100% to 500% — smooth gain control beyond the browser default
🔁 Live updates — changes apply instantly without reloading the page
👁️ Works on dynamic pages — a MutationObserver catches media loaded after the page opens (e.g. YouTube)

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500% Volume Booster av Minebom55

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