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About

Compress audio in your browser

Reduce the size of an audio file using the efficient WebM/Opus format. All processing is done securely on your computer, meaning your files never leave your device.

How to use Compress Audio

  1. Select a large audio file.
  2. Choose a target quality level.
  3. Click Compress Audio to encode the file.
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Frequently Asked Questions

How does it make the file smaller?
The tool re-encodes the audio using Opus, a highly efficient modern format that achieves great sound quality at very small file sizes.
Why output as WebM?
WebM is a widely supported container format that pairs perfectly with the Opus audio codec, providing the best compatibility across modern web browsers and devices.
Accepted formats: MPEG, WAV, OGG, WEBM, FLAC, AAC, MP4, MP4, WEBM