Audio Compressor
Shrink audio files so they’re easy to email, message or upload.
Drop a file here or click to choose Tap to choose
MP3, WAV, FLAC, M4A, OGG
On phones this downloads a ~30 MB engine on first use and can be slow or run out of memory on large files. Smaller files work best on mobile.
file
Output is MP3. Lower bitrate = smaller file, lower quality.
Free Online Audio Compressor — Make Files Smaller
Audio files too big to send? Compress them in seconds. This tool re-encodes your audio to a smaller MP3 so it fits within email attachment limits, sends quickly on WhatsApp or Discord, and uploads faster to the web — while keeping it sounding good.
It all happens in your browser, so your audio is never uploaded. Pick a compression level to balance size against quality.
How it works
Drop your file
Choose any audio file. It's processed locally and never uploaded.
Choose a level
Pick how much to compress — from near-original to maximum savings.
Compress & download
Click compress and download your smaller MP3.