Compress Audio Files Online
Reduce MP3, WAV, FLAC, AAC, and OGG file sizes instantly in your browser. Perfect for sharing, streaming, and saving storage.
Drop an audio file here or click to browse
MP3, WAV, FLAC, AAC, OGG — up to 100 MB
Compress MP3, WAV, FLAC, AAC, and OGG files
Three compression levels — 192kbps, 128kbps, 64kbps
100% client-side — files never leave your device
Before and after audio preview
Instant download of compressed files
No watermarks, no sign-up required
Frequently Asked Questions
What audio formats does Compresso support?
Compresso supports MP3, WAV, FLAC, AAC, and OGG audio files. All formats are re-encoded to MP3 for optimal compression.
How much can I reduce my audio file size?
Results vary by source format. WAV and FLAC files can be reduced by 80–90%. MP3 files compressed at a lower bitrate typically see 30–60% reduction.
What do the compression levels mean?
Low compression encodes at 192kbps for near-original quality. Medium uses 128kbps for a good balance. High compression uses 64kbps for maximum size reduction with noticeable quality trade-off.
Will compression affect audio quality?
Yes — audio compression is lossy. Low compression preserves most quality, while high compression reduces file size more aggressively. Use the audio preview to compare before downloading.
Is it safe to compress audio with Compresso?
Absolutely. Compresso processes everything in your browser using FFmpeg WebAssembly — your files are never uploaded to any server.