LUFS Mastering

Masters audio to Spotify's exact -14 LUFS standard locally in the browser, no upload or account.

Webfreeglobal

A free browser-based mastering tool that adjusts WAV, MP3 or FLAC files to Spotify’s -14 LUFS target and sets true peak to -1 dBTP using deterministic DSP based on ITU-R BS.1770-4, with all processing done locally in the browser and no uploads or account required. It helps independent musicians, producers and freelance engineers avoid tracks being turned down by streaming services by producing a precisely level-matched master for distribution.

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