OGG
The open-source answer to proprietary audio.
Where it came from
Xiph.Org began Vorbis in 1998 explicitly as a patent-free alternative after it became clear MP3 wasn't free. Version 1.0 shipped in 2002. The name honors Terry Pratchett's Discworld character; 'Ogg' is technically the container, Vorbis the codec — but everyone says 'OGG'.
It became the darling of game developers (cheap licensing) and streaming services, and YouTube quietly serves Opus/Vorbis to capable clients.
How it works
Vorbis is a transform codec like MP3 but with a more modern psychoacoustic model — at 128 kbps it generally matches MP3 at 160–192. The Ogg container pages packets with granule positions enabling precise seeking.
Common confusion: .ogg might contain Vorbis audio or Opus or even video (Theora) — sniffing the codec inside matters, which is exactly what magic-byte detection does.
UWC decodes OGG/Vorbis via Web Audio and re-encodes wherever you need.
Convert OGG audio
OGG to MP3 for maximum compatibility, to WAV for editing — decoded and re-encoded in your browser.