Snappy is a compression format and program library to implement it, introduced by Google. It is designed for very fast compression and decompression.
Snappy is defined as a raw stream format, plus a higher-level "framing format" that can be used as a file format.
The framing format begins with bytes
0xff 0x06 0x00 0x00 's' 'N' 'a' 'P' 'p' 'Y'.