This tool requires the Media tier. The engine is already loaded — sign in and upgrade to run it on your audio.
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
Drop your audio file (MP3, WAV, FLAC, M4A)
Pick a preset — Spotify, Apple Podcasts, YouTube, EBU broadcast
JAD runs a true 2-pass loudnorm and downloads the leveled result
0 bytes uploaded. Loudness Normalizer (EBU R128) runs entirely in your browser using FFmpeg.wasm 8.1, RNNoise, and the Web Audio API. Your audio stays on your device at all times. No data is sent to any server — critical for sensitive interviews and confidential calls.
EBU R128 is the broadcast standard for loudness measurement. It defines integrated LUFS, loudness range (LRA), and true-peak ceilings — the same algorithm Spotify, Apple, and Netflix use to level audio.
Pass one measures actual integrated loudness, true-peak, LRA, and threshold. Pass two applies a corrective gain plus a true-peak limiter using those measurements. Single-pass loudnorm can overshoot the true-peak target.
Apply a true-peak ceiling (-1 dBTP default) so your podcast or master never clips on streaming codecs. Inter-sample peak aware.
Open toolSmooth out loud and quiet passages so voices sit consistently in the mix. Broadcast-style compression with adjustable threshold, ratio, attack, and release.
Open toolDrop up to 5 episodes. JAD runs RNNoise → silence stripping → EBU R128 normalisation → true-peak limiting and hands you publish-ready files. Unlimited hours, your CPU.
Open tool