Audio

Volume normaliser

Analyse audio loudness and normalise to a target level. Uses the Web Audio API — no upload.

Drop your audio file here, or

MP3 · WAV · OGG · AAC · FLAC · M4A · Max 100 MB

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100% private. All processing happens locally in your browser — no files or data are ever sent to a server.

How to use Volume normaliser

  1. 01 Drag and drop your audio file onto the upload area, or click to browse
  2. 02 Choose your settings (format, quality, timestamps, etc.)
  3. 03 Click the action button — the engine loads on first use, then processes your file
  4. 04 Click Download to save the result to your device

Frequently asked questions

Common questions about Volume normaliser.

Is Volume normaliser free to use?
Yes, Volume normaliser is completely free. No account, subscription, or payment is ever required — just open the page and start using it.
Does Volume normaliser upload my data to a server?
No. Volume normaliser runs entirely in your web browser using client-side JavaScript. Your files, text, and data never leave your device, making it 100% private.
Can I use Volume normaliser on my phone or tablet?
Yes. Volume normaliser is fully responsive and works on all modern smartphones, tablets, and desktop browsers without installing any app.
Are my audio files kept private?
Yes. Volume normaliser processes all audio entirely in your browser using ffmpeg.wasm (a WebAssembly build of FFmpeg) or the Web Audio API. Your files are never uploaded to any server.
Why does it take a moment to start the first time?
The audio engine uses ffmpeg.wasm, a ~30MB WebAssembly library that loads on demand — only when you click the action button. Once loaded, subsequent operations are instant. It is not loaded on page arrival to protect page speed.

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About Volume normaliser

Volume normalisation adjusts the overall gain of an audio file so its loudness reaches a consistent target level. The Volume Normaliser analyses your file using the Web Audio API, shows the current peak and RMS levels, and exports a version normalised to your chosen target in dBFS. This is useful for matching the levels of multiple recordings before editing, preparing audio for podcasts (standard target: -16 LUFS for stereo) and streaming platforms (-14 LUFS), and fixing quiet recordings. All analysis and processing happens entirely in your browser.

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