How to
- Drop an audio file.
- Move the volume slider, or click Maximise to make it as loud as it gets without distortion, and listen.
- Save: same format, or MP3, M4A, WAV, OGG, Opus or FLAC.
Frequently asked questions
How much louder can it go?
Up to +20 dB, about four times as loud to the ear. Past the point where the loudest peak reaches full scale, a limiter holds the peaks down so the sound gets louder without crackling.
What does Maximise do?
It measures the loudest peak of the selection and sets the gain so that peak lands at -1 dB: as loud as possible with no distortion and no limiter needed.
Is my recording uploaded?
No. The file is decoded and processed in your browser; nothing is sent anywhere.
Why here
The file stays on your device. No upload, no queue, no size limit, no account, no watermark. The engine is the same reference software professionals use, compiled for your browser.