EBU R128 loudness normalization with two real-world presets — quiet files fixed properly.

How to use

1. Load an audio file → pick Streaming or Broadcast target.
2. Choose MP3 (small) or WAV (lossless).
3. Normalize → download.

About this tool

One episode too quiet, the next too loud — that is what normalizing fixes. This tool uses FFmpeg's loudnorm filter, the same EBU R128 loudness model broadcasters use: it measures perceived loudness in LUFS and corrects the level, so a whispered voice memo and a shouty phone recording both land at a consistent, comfortable volume. Pick Streaming −16 LUFS (YouTube, podcasts, Spotify-style) or Broadcast −23 LUFS (EBU R128 television standard), then export MP3 or lossless WAV. The engine (~30 MB one-time) runs in your browser. Your file never leaves this page — processing runs in your browser via WebAssembly; nothing is uploaded and the file is dropped from memory when you close the tab.

FAQ

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