Sound Booster — Arbenger

Boost any tab's audio up to 600% — far beyond the browser's built-in limit. Perfect for quiet videos, low-volume streams, and podcasts that just aren't loud enough. WHAT YOU GET: • Volume boost up to 600% — Smooth slider with snap-to-100% and visual peak meter • 5-band equalizer — Fine-tune bass, mids, and treble (60Hz, 230Hz, 910Hz, 4kHz, 14kHz) • Presets — Flat, Bass Boost, Treble Boost, Music, Movie, Voice, Bass Cut • Custom presets — Save and manage your own EQ configurations • Per-tab control — Each tab keeps its own volume and EQ settings • Keyboard shortcuts — Alt+Shift+Up/Down for volume, Alt+Shift+M for mute • On/off toggle — Instantly bypass all processing without losing settings • Live peak meter — See audio levels in real time • Light & dark mode — Toggle in the popup header WHY THIS ONE: Most volume boosters request broad permissions and inject heavy scripts into every page. This extension uses only three permissions: • activeTab — injects the audio processor only when you activate it • storage — saves your presets and preferences locally • scripting — enables on-demand content script injection No page content access. No network requests. No analytics. No background tracking. HOW IT WORKS: Sound Booster uses the Web Audio API to build a professional processing chain: your media → 5-band EQ → gain boost → dynamics compressor (prevents clipping) → analyser (peak meter) → speakers. All processing runs locally in your browser. KEYBOARD SHORTCUTS: • Alt+Shift+Up — Volume up 10% • Alt+Shift+Down — Volume down 10% • Alt+Shift+M — Toggle mute NOTE: Works with standard HTML5 audio and video elements. Some streaming services with DRM protection (Netflix, Disney+, Spotify) use encrypted media that cannot be processed by the Web Audio API. Free. No account needed. No data collected. Made by Arbenger — https://arbenger.com