Audio Compress
Reduce audio file size
Preparing audio processing engine...
Loading ffmpeg.wasm library (~30MB). This happens once and will be cached.
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💡 Tips:
- Bitrate: Lower bitrates = smaller files but reduced quality. 128k is good for speech, 192-256k for music
- Format Choice: MP3 is most compatible, AAC offers better quality at same bitrate, OGG is open-source
- Quality Presets: Use Low for podcasts/voice, Medium for general use, High for music
- Sample Rate: 44.1kHz is standard CD quality and works for most uses
- Preview First: Always listen to the compressed audio before downloading
- Multiple Compressions: Avoid compressing already compressed files (like MP3) multiple times
- Privacy First: All processing happens on our secure servers - your files are protected
🔒 🔒 For your privacy, this tool runs entirely in your browser. Your files never leave your computer—zero uploads to any server.