Normalize Loudness
Level audio or video to a broadcast/streaming loudness target (EBU R128, Spotify, Apple Music, and more).
About Normalize Loudness
Normalize Loudness levels an audio or video file to a chosen loudness target — EBU R128 for broadcast, or platform presets like Spotify and Apple Music. It fixes the problem of clips that are too quiet, too loud, or wildly uneven between sources. The measurement and re-leveling run entirely in your browser.
- Category
- media
- Input
- Accepts: audio/* or video/*.
- Output
- Outputs: */*.
- Cost
- Free, runs in your browser
- Memory
- high
- Install group
- ffmpeg
Common uses
- Bring a podcast episode to the -16 LUFS streaming standard before publishing
- Match the loudness of interview clips recorded on different devices into one consistent edit
- Hit Spotify's loudness target so your track isn't auto-turned-down on playback
- Normalize a lecture or webinar recording that's frustratingly quiet
- Level a batch of social videos so viewers don't reach for the volume between clips
Frequently asked questions
Which loudness targets are supported?
Broadcast/streaming standards including EBU R128, plus platform presets such as Spotify and Apple Music.
What's the difference between this and just turning up the volume?
Adjusting volume applies a flat gain; loudness normalization measures perceived loudness (LUFS) and adjusts to hit a target level, so different files end up sounding equally loud.
Does it work on video as well as audio?
Yes. It accepts both audio/* and video/* files and outputs the same media type you fed in.
Will normalizing clip or distort loud peaks?
Loudness normalization targets integrated loudness with true-peak limiting in mind, so it raises or lowers overall level without crushing the signal the way a naive gain boost can.
Is my file uploaded?
No. Both the analysis and the re-leveling happen locally in your browser; nothing is sent to a server.
Keywords
- loudness
- normalize
- lufs
- ebu
- r128
- audio
- video
- volume
- loudnorm