Converting OGG to FLAC wraps the decoded audio in a lossless compressor. This won't recover anything the Vorbis encoder discarded, but it normalizes your library to a single lossless-container format and gives you richer tagging than OGG's Vorbis comments offer in practice.
Drag & drop audio files here, or browse
Drop your OGG files here
No audio change: you get a bit-perfect lossless copy of whatever the OGG decoded to. File size will grow (lossless compression of already-lossy audio is still larger than the original lossy file). The only benefit is tooling consistency.
FLAC plays on Windows, macOS, Linux, Android, modern iOS, and all serious audio players. Library software like Plex, Roon, and Jellyfin treats FLAC as first-class.
OGG Vorbis is a royalty-free lossy codec developed by Xiph.Org. At comparable bitrates it sounds cleaner than MP3, especially at 96 kbps and below, and it's the audio format used by Spotify's streams, most modern games, and open-source projects that want to avoid patent encumbrances.
FLAC is a lossless compressor: it shrinks PCM audio to roughly 50–60% of its original size and decodes back to a bit-perfect copy. It supports tags, cue sheets, and up to 32-bit / 655 kHz, which makes it the de facto format for CD rips and audiophile music libraries.
No. FLAC is lossless, but the OGG was already lossy. FLAC preserves the decoded OGG exactly: no more, no less. The audio quality is identical.
Lossless compression of PCM audio produces bigger files than lossy compression of the same source. OGG discarded data to get small; FLAC doesn't throw anything away.
OGG Vorbis is a royalty-free lossy codec developed by Xiph.Org. At comparable bitrates it sounds cleaner than MP3, especially at 96 kbps and below, and it's the audio format used by Spotify's streams, most modern games, and open-source projects that want to avoid patent encumbrances.
FLAC is a lossless compressor: it shrinks PCM audio to roughly 50–60% of its original size and decodes back to a bit-perfect copy. It supports tags, cue sheets, and up to 32-bit / 655 kHz, which makes it the de facto format for CD rips and audiophile music libraries.
Yes. The converter runs entirely in your browser using FFmpeg compiled to WebAssembly. Your audio files are never uploaded, never sent to a server, and never leave your device.
There's no hard limit, but because everything runs in your browser you're bounded by available memory. Files over about 2 GB total can get slow or hit browser memory limits. Process in smaller batches if you run into issues.