Will this work on my phone or an older browser?

Most current browsers compress audio directly. On an older or less common one, FileSherpa automatically falls back to a slower method that still runs entirely on your device.

Does this support every audio format?

MP3, WAV, M4A, AAC, OGG, and FLAC as input — the result is always an MP3, the most broadly compatible format for sharing and playback.

Audio tools

Compress Audio

Give it a size to hit — 10 MB to email or upload, say — and it picks the bitrate to fit, entirely in your browser. Nothing is uploaded: your file is read, compressed, and downloaded all on your own device.

Your files never leave your device

Drop a file here, click to browse, or pasteTap to choose a file

.mp3, .wav, .m4a, .aac, .ogg, .flac, .webm · up to 500 MB each

How should this be compressed?

Compress to a target sizeTries several quality settings and keeps the best one that fits.

Target size

Priority

Set the quality myselfOne pass at whatever you pick with the quality slider below.

Before you run this

This always re-encodes the audio — even a file that's already a small MP3 gets fully redone.
The result is always an .mp3 file, regardless of the format you started with.

Add a file above to continue.

FAQ

Will this work on my phone or an older browser?: Most current browsers compress audio directly. On an older or less common one, FileSherpa automatically falls back to a slower method that still runs entirely on your device.
Does this support every audio format?: MP3, WAV, M4A, AAC, OGG, and FLAC as input — the result is always an MP3, the most broadly compatible format for sharing and playback.

Compress Audio

FAQ

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