AAC → M4A
Wrap loose AAC streams into tidy M4A files in your browser.
Drop files here
or browse from your device
images · audio · video · documents · archives · up to ~500MB
100% Private
Runs in your browser. No upload.
Instant
No queue, no server roundtrip.
Offline-ready
Works after first load.
A bare .aac stream has no container, which means no reliable duration, no cover art and no tags — media libraries handle it badly. Repackaging as M4A gives you the same audio in a container that supports metadata properly.
Drop your AAC file above and Morphix decodes it locally, then re-encodes it as M4A using WebAssembly + the browser's native codecs. Nothing is ever uploaded — your files stay on your device. Batch as many files as your machine can handle.
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