Choose M4A
Add one file or a complete batch. Each input remains on your device.
M4A to FLAC
Turn MPEG-4 audio files into FLAC audio outputs locally. Files remain in browser memory and each result is signature-checked.
100% private for supported formats
Runs on your deviceConvert supported files
Drop M4A files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.Convert locally
The local decoder and browser encoder create real FLAC output bytes.
Validate and save
The signature is checked before your download becomes available.