offlinewebtools.com browser-local workbench

Audio Loudness Normalizer

Normalize podcasts or music stems to common LUFS loudness targets using FFmpeg inside your browser.

Shipped

Browser local

Source file *

Files are processed locally in your browser using WebAssembly. This input is required.

Saved FFmpeg presets (stored locally)

Saved presets

Preset name

Preview and export

Inspect the source before running FFmpeg, then preview the generated output before downloading.

Local media

Choose a media file to fill this source preview before processing.

Expected output

Quick sample previews and final downloads appear here after processing.

Loudness presets

Target LUFS (I)

True peak (TP)

Loudness range (LRA)

What this tool does

Audio Loudness Normalizer helps you normalize podcasts or music stems to common LUFS loudness targets using FFmpeg inside your browser.

What you get

Audio Loudness Normalizer produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.