Audio files can be surprisingly large — especially WAV and uncompressed recordings. Here's how to compress them significantly while keeping quality that's indistinguishable to human ears.
Step-by-Step: Compress Audio Online
- 1. Open FileCurve Audio Compressor
- 2. Upload your audio file (MP3, WAV, OGG, AAC, FLAC)
- 3. Set output bitrate — see guide below
- 4. Click "Compress" and download
Bitrate Guide — Quality vs File Size
| Bitrate | Quality | Best For | Size (per min) |
|---|---|---|---|
| 320kbps | Excellent | Music archiving | ~2.4MB |
| 192kbps | Very Good | Music streaming | ~1.4MB |
| 128kbps | Good | Podcasts, voice | ~0.96MB |
| 64kbps | Acceptable | Voice memos | ~0.48MB |
Best Format for Compressed Audio
- MP3: Best compatibility — works everywhere. Use 128kbps for voice, 192kbps+ for music.
- AAC (M4A): Better quality than MP3 at the same bitrate. Best for Apple devices.
- OGG: Open format, great quality. Best for web and games.