What target presets are supported?

You can select presets for Spotify (-14 LUFS), Apple Music (-16 LUFS), broadcast (-23 LUFS), podcast (-16 LUFS), or define custom targets.

Which audio formats can I upload and download?

You can upload common audio files and export them as MP3, WAV, FLAC, M4A, OGG, or match the source format.

LUFS stands for Loudness Units relative to Full Scale, a standard measurement of perceived audio loudness.

Does this tool alter the dynamic range of my audio?

Yes, the loudnorm algorithm uses dynamic range compression if necessary to meet the target LUFS and true peak limits without clipping.

Is there a file size limit for uploads?

Yes, the maximum supported audio file size is 200 MB.

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Audio Loudness LUFS Normalizer

Measure integrated LUFS, true peak, and LRA, then normalize audio to Spotify, Apple Music, broadcast, or custom targets

Details

What this tool helps you do

Runs FFmpeg loudnorm in a measurement-first workflow, writes a normalized audio file, and reports before/after loudness metrics.

Execution

Run this tool

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Prepared example runs

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1 examples

Normalize a podcast episode for Spotify

Measure the source loudness, then export a normalized file near Spotify's -14 LUFS target.

{
  "type": "file",
  "filePath": "/public/processing/audio-loudness-lufs-normalizer-example.mp3"
}

Inputs

Set the required fields, then run the tool.

6 options

FilesUpload source files for this workflow.1

Audio FilefileRequired

Single file max size: 100 MBSupported types: audio/*

SettingsAdjust formats, ranges, numbers, and modes.5

Target PresetselectOptionalCustom Integrated LUFSnumberOptionalCustom True Peak dBnumberOptionalCustom LRAnumberOptionalOutput FormatselectOptional

Result

Ready for a run

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Samples

Audio Loudness LUFS Normalizer

What this tool helps you do

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Prepared example runs

Inputs

Result

Examples that match this tool

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Prepared example runs

Inputs

Result

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Key facts

Overview

When to use

How it works

Use cases

Examples

1. Normalizing a Podcast for Spotify

2. Custom Broadcast Mastering

FAQ

Copyright-Free FLAC Audio Samples

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