Compress Audio on Mac — Free Browser-Based Compressor

Mac doesn't include a built-in audio compressor. Tools like GarageBand can re-export at lower quality, but it's cumbersome. Drop your audio here and compress it in Safari or Chrome — no software installation required.

Audio Compressor

Compress MP3, WAV, FLAC, and M4A files up to 90% smaller. Choose your bitrate — runs entirely in your browser, no upload.

Compress Audio Free

Audio compression on macOS without GarageBand or Terminal

The standard advice for compressing audio on Mac is to use GarageBand, import the file, lower the quality, and re-export. That's 5 steps for a task that should take seconds. This browser tool handles it with a drag-and-drop — decoding and re-encoding entirely locally.

Up to 90%
size reduction
MP3, WAV
FLAC, M4A accepted
100%
browser-based

Compress Your Entire Audio Library on Mac

Compress videos, photos & audio. HEVC, WebP, AVIF, FLAC support.

$14.99 one-time

Get MediaOptim for Mac

Compress Audio on iPhone

Compress photos & videos directly on iOS and Android.

$4.99 one-time

Get MediaOptim Mobile

Also available on mobile

Free Up Your iPhone & Android Storage

Compress on-device. No uploads. No subscriptions.