Audio Compressor

Reduce audio file size with a chosen MP3 bitrate and an honest before/after size check.

Private browser workspaceInput: Supported audio → Output: Smaller MP3

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Your file never leaves this browser

Processing happens locally using browser APIs and on-device code. Closing this tab clears the working data.

How it works

Done in three simple steps

Choose supported audio from your device.

Choose the available options and process the input locally.

Review the result, then download it to your device.

Good to know

Can every recording be made smaller?+

No. An already efficient source may grow at a higher bitrate. Try a lower setting and keep the original when the quality trade-off is unacceptable.

Are my files uploaded?+

No. Processing happens on this device. The tool may download its own code, but source files and output are not sent to a processing server.