Batch convert, process and re-tag your audio library
A browser-native alternative to desktop converters. Drop in a folder of tracks, choose an
encoder, stack DSP effects, fix the ID tags and album art, then export. Decoding and encoding
run locally through a WebAssembly build of FFmpeg — your files are never uploaded anywhere.
100% local processing
MP3 · FLAC · WAV · AIFF · AAC · ALAC · Ogg · Opus
EBU R128 loudness · resample · trim · fade
ID tags + embedded artwork
Conversion queue
0 files
Drop audio files or folders hereor click to browse — mp3, flac, wav, aiff, m4a, ogg, opus, wma, aac, ape, wv…
Artwork
Track
Source
Length
Status
Actions
Idle
Waiting for files. The FFmpeg engine loads on demand the first time you convert.