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 FreeAudio 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.
Compress Your Entire Audio Library on Mac
Compress videos, photos & audio. HEVC, WebP, AVIF, FLAC support.
$14.99 one-time
Get MediaOptim for MacCompress Audio on iPhone
Compress photos & videos directly on iOS and Android.
$4.99 one-time
Get MediaOptim MobileAlso available on mobile
Free Up Your iPhone & Android Storage
Compress on-device. No uploads. No subscriptions.