AUDIO COMPRESSOR
Audio Compressor
Reduce audio file sizes in your browser. No uploads, no sign-up required.
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MP3 Compressor
Reduce MP3 file size with 128kbps VBR encoding. Smaller files for web and sharing.
Compress MP3 →Compression Statistics
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Size Reduction
60%Typical
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Engine
FFmpegWASM
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Privacy
100%No Upload
Audio Compression FAQ
How much can I reduce an audio file size?
MP3 files compressed with VBR 128kbps typically achieve 40–60% size reduction. WAV files compressed to MP3 can be 80–90% smaller.
Does audio compression affect sound quality?
At 128kbps VBR, the quality difference is minimal for most listeners. For studio work, use lossless formats. For web and sharing, 128kbps is the standard.
Are my audio files uploaded to a server?
No. All processing runs entirely in your browser using FFmpeg.wasm. Files never leave your device.
What audio formats are supported?
MP3 input is supported. The output is always a compressed MP3 file suitable for web, streaming, and sharing.