Reduce audio file sizes in your browser. No uploads, no sign-up required.
View AllReduce MP3 file size with 128kbps VBR encoding. Smaller files for web and sharing.
Compress MP3 →Size Reduction
Engine
Privacy
MP3 files compressed with VBR 128kbps typically achieve 40–60% size reduction. WAV files compressed to MP3 can be 80–90% smaller.
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.
No. All processing runs entirely in your browser using FFmpeg.wasm. Files never leave your device.
MP3 input is supported. The output is always a compressed MP3 file suitable for web, streaming, and sharing.