One of the big pros is the fact that its’ design principle involves really effective optimization routines for compressing audio. If you collect lossless audio in digital format, many consider FLAC the way to go in terms of storage. It is similar to popular compression formats like ZIP, RAR and 7z in a way that it does not alter the original content, just stores it at a smaller file size. FLAC stands for Free Lossless Audio Codec and is considered to be one of the most popular compression formats when it comes to lossless audio.
