EBU R128 loudness normalization for consistent volume.
Drop an audio file here or click to select
Single file
Add an MP3, WAV, M4A, OGG or FLAC file.
Set the format-specific options.
Save the processed audio to your device.
MP3, WAV, M4A/AAC, OGG and FLAC — decoded and re-encoded in-browser with ffmpeg.wasm.
No. Audio bytes are processed locally in a Web Worker.
Zro7 re-encodes at high bitrate by default. For truly lossless workflows, choose WAV or FLAC output.
Cut a clip from start to end — MP3, WAV, M4A.
WAV ⇄ MP3 ⇄ AAC ⇄ OGG ⇄ FLAC.
Auto-cut long silent gaps from talks and voice memos.
Speed up or slow down without changing pitch.
Shift pitch up or down, chipmunk to deep voice.
Boost or attenuate audio by decibels.
Add smooth fade-in and fade-out to any clip.
Play the audio backwards.
Zro7