Rip an audio CD to FLAC and MP3 320 entirely in your browser. The disc is read through the File System Access API, FLAC and MP3 encoding run as WebAssembly on your own machine, and the library index lives in IndexedDB. Nothing is uploaded — the only network calls are metadata lookups to MusicBrainz and cover art from the Cover Art Archive.
Needs JavaScript, and a Chromium-based browser such as Chrome or Edge: Safari and Firefox do not implement the File System Access API.
Source code on GitHub