Audio Compressor
Reduce audio file size while maintaining quality. Customize compression settings.
Drop an audio file here
or click to browse • Supports MP3, WAV, OGG, FLAC, M4A
🔒 Privacy First
All compression happens in your browser. Your audio files are never uploaded to any server.
How Audio Compression Works
Bitrate Reduction
Lower bitrate means smaller files. 128 kbps is good for most uses, 64 kbps for voice/speech.
Sample Rate
22 kHz is fine for speech, 44.1 kHz (CD quality) for music, 48 kHz for professional audio.
Mono vs Stereo
Mono (1 channel) is half the size of stereo. Use mono for voice recordings and podcasts.
Recommended Settings
| Use Case | Bitrate | Sample Rate | Channels |
|---|---|---|---|
| Voice/Speech | 64 kbps | 22.05 kHz | Mono |
| Podcasts | 96 kbps | 44.1 kHz | Mono |
| Music (Standard) | 128 kbps | 44.1 kHz | Stereo |
| Music (Quality) | 192+ kbps | 44.1 kHz | Stereo |
Frequently Asked Questions
Will compression affect audio quality?
Yes, compression involves trade-offs. Lower bitrates mean smaller files but reduced quality. For most purposes, 128 kbps provides a good balance between size and quality.
What's the output format?
The browser outputs WebM/Opus format, which is widely supported and offers excellent compression. You can use our Audio Converter to convert to MP3 if needed.
Is my audio uploaded anywhere?
No! All processing happens entirely in your browser using the Web Audio API. Your files never leave your device.