Compress Audio for Email — Reduce MP3 and WAV File Size

Gmail and Outlook limit email attachments to 25MB. A high-quality WAV recording or multi-track audio file easily exceeds this. Compress to MP3 at 128kbps here and your audio will fit in any email attachment.

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

Email attachment limits for audio files

Gmail: 25MB. Outlook: 20MB. Apple Mail: 20MB. A 5-minute stereo WAV at 44.1kHz is about 50MB — double the Gmail limit. The same audio as a 128kbps MP3 is under 5MB. Compression for email is one of the most common audio use cases.

Up to 90%

size reduction

MP3, WAV

FLAC, M4A accepted

100%

browser-based