Boost or attenuate audio by decibels.
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.
EBU R128 loudness normalization for consistent volume.
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.
Add smooth fade-in and fade-out to any clip.
Play the audio backwards.
Zro7