Audio tools

Audionorm

Normalize audio loudness in your browser or from the command line.

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Overview

Audionorm measures perceptual loudness and applies the gain needed to reach a target without exceeding a true-peak ceiling. Use the private browser app for drag-and-drop processing or the zero-install CLI for files, folders, and batch workflows.

LUFS normalization

Measure integrated loudness using ITU-R BS.1770 and EBU R128 targets.

True-peak protection

Pull back gain when needed so normalization does not introduce clipping.

SFX preset

Bring short UI sounds and notifications to a consistent peak level.

Browser and CLI

Process locally in the PWA or batch files and folders with npx audionorm.

Use and install

Open the private browser app and install it as a PWA, or run the zero-install CLI with Node.js.

Open app

CLI · Node.js

npx audionorm

FAQ

Are audio files uploaded?

No. The web app measures and processes audio entirely in your browser.

What formats can the CLI write?

The CLI supports WAV, MP3, FLAC, M4A, and OGG output.

Which preset should I use for UI sounds?

Use the sfx preset for short button clicks, notifications, and other interface sounds.