flac
What is a .flac file?
audio/flac
FLAC (Free Lossless Audio Codec) compresses PCM audio losslessly, typically to about half the size of the original with no quality loss. It supports metadata tags, embedded cover art, and fast seeking. It is favored for archival and audiophile music libraries.
How to use a .flac file
Use an example FLAC to test lossless decoding, verify bit-exact round-trips against source PCM, and exercise tag parsing and transcoding to lossy formats.