500% Volume Booster von Minebom55

🔊 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)