Make your sound sound better. The free sound booster for Chrome — boost volume up to 600% without distortion, with a bass booster and audio equalizer — plus AI mastering, a stem splitter and free online audio tools.
Drop your track
Drag & drop or browse files
WAV, MP3, FLAC, OGG, M4A/AAC, Opus up to 250 MB. Decoded on your device — nothing is uploaded until you choose a tool that needs it.
Hear the difference
Press play and flip between the original and the mastered version. Both run through the same engine you'll use on your own tracks.
Sample loop.wav
Synthesised demo mix · processed live in your browser
Real processing, not a recording: EQ, compression, saturation, stereo widening and a look-ahead limiter. Loudness-matched comparisons of your own tracks are on the mastering page.
One place for your entire sound
Mastering, stems, analysis and visuals share one engine and one library — so a project moves from idea to release without leaving your browser.
AI Mastering
Tell SoundBooster how the track should feel — “punchier drums, clearer vocals” — or let it analyse the mix. Every revision is rendered for real and loudness-matched, so you judge the tone, not the volume.
Stem Splitter
Separate vocals, drums, bass and the rest — or go further with six stems and a full drum kit. Mix them with pan, mute and solo, then export stems, an instrumental or an a cappella.
Audio Tools
Check loudness the way streaming services do, see how much they'll turn you down, and convert, trim, tag, re-pitch or clean up files — all on your device.
AI Visuals
Generate artist photos and album covers, and render audio-reactive visualizers and Spotify Canvas loops from your own song — sized for every platform.
Multitrack editing with BPM, key and chord detection, a metronome and lyrics.
OpenSound effects from text, plus noise removal, voice cleanup and restoration.
OpenA storyboard built around your song, cut on the beat, exported in any shape.
OpenMake quiet files up to 6× louder, with a limiter that keeps them clean.
OpenSound booster extension for Chrome
YouTube too quiet? A call you can barely hear? SoundBooster boosts the tab you choose above 100% — up to 600% — without touching the rest of your computer. Boost several tabs at once, turn off just one, and shape each with a bass booster and equalizer.
Free
No plans, no trials, no credit card. The sound booster, the studio, AI mastering and every audio tool are free for everyone.
AI features that run on outside services have a fair daily limit, so everyone gets a turn.
Questions
Everything people ask before they turn it up.
Chrome has no setting above 100%. Add the free SoundBooster extension, open the quiet tab and choose a preset — 150%, 200%, 300%, 400% — or drag up to the 600% maximum.
Yes, completely. The sound booster extension, the studio, AI mastering and every audio tool are free — no plans, no trials and no credit card. AI features that run on outside services have a fair daily limit.
No. Instead of clipping loud peaks, SoundBooster uses a look-ahead limiter that turns them down smoothly just before they play, so audio stays clean even at 600%.
Yes — it boosts any Chrome tab that plays sound and that Chrome lets extensions capture, including YouTube, web music players, Google Meet and Zoom's web client.
Yes. The extension includes a bass booster (up to +12 dB), treble control and a 5-band audio equalizer, all per tab. For files, there's a free online bass booster.
Yes. Every tab has its own volume and equalizer, and you can turn off one tab while the others stay boosted.
No. The extension processes tab audio on your computer and never records it. Browser tools decode files on your device too.
100% free. No credit card, no installer — just your browser.
Your audio stays yours. When a feature needs a server, the page says so first. Privacy
