You may have noticed HTTP headers from some of the previous screenshots were related to encoding. The most common compression algorithms for HTTP are GZIP and DEFLATE, which are very similar. These are both related to the algorithm used in ZIP files. If you do not already use HTTP compression, then this is a quick win, and it will improve the performance of your site if you enable it.
There are many other more advanced compression algorithms, such as xz, which is similar to the 7-Zip (7z) format and uses the Lempel-Ziv-Markov chain algorithm (LZMA/LZMA2). However, there are currently only two additional algorithms in common use in major browsers. These are Brotli and Shared Dictionary Compression for HTTP
