convrt

audio preset

M4A→OpusFFmpeg in-browser · nothing uploaded

Output is preset to Opus. Add files — FFmpeg.wasm runs locally via the shared encoder loader (same stack as the video converter).

More audio presets

ingest lanedrag · click · repeat

More fuel for the machine

Drop here or use Choose files — everything stays in this tab, not on our infrastructure.

extension index

File types people search for

Jump into the converter and try your files — coverage grows over time, but the list stays honest about what folks type into search boxes.

audio · extension index

Audio file types people search for

Drop these in the audio tool — FFmpeg tries common codecs locally; if something exotic fails, try re-wrapping or exporting to a simpler container first.