From the infoq article https://www.infoq.com/news/2016/07/apple-lzfse-lossless-opensource https://www.infoq.com/news/2016/07/apple-lzfse-lossless-open... that c

From the infoq article https://www.infoq.com/news/2016/07/apple-lzfse-lossless-opensource https://www.infoq.com/news/2016/07/apple-lzfse-lossless-open... that contains much more detail and is linked to by the original submitted link. "Admittedly, LZFSE does not aim to be the best or fastest algorithm out there. In fact, Apple states that LZ4 is faster than LZFSE while LZMA provides a higher compression ratio, albeit at the cost of being an order of magnitude slower than other options available in Apple SDKs. LZFSE is Apple’s suggested option when compression and speed are more or less equally important and you want reduce energy consumption." https://developer.apple.com/library/ios/documentation/Performance/Reference/Compression/index.html https://developer.apple.com/library/ios/documentation/Perfor... has a section titled "Choice of Compression Algorithm"