Turn M4A (M4A Audio) files into FLAC (FLAC Lossless) — in your browser, no install, no quality loss.
Convert nowM4A goes straight to FLAC, with no intermediate format to degrade it along the way.
The work is done by ffmpeg.
M4A already threw information away when it was compressed. Moving to FLAC does not bring it back; it preserves what is left as it is.
M4a maps to flac in a single step. Handled by ffmpeg. What M4A already discarded does not come back in FLAC.
For members, files live only in your own company drive and no other company can see them. As a guest, everything is deleted after 24 hours. Retention varies by plan and you can delete anything yourself at any time.
Yes. Drop in as many as you like — we show only the targets every file can reach, then convert them together.
No, it runs in your browser. A Windows build exists but is optional; it adds watched folders and an Explorer right-click menu.
You can try it without signing up, and free members get a set number of conversions each month. Larger files or higher volume need a paid plan.