Alternatively referred to as compacting, compressing is the process of taking one or more files and combining them or making them smaller by utilizing an algorithm in a compression utility. Commonly, file compression removes redundancies, or specific data that may not essential (e.g., a very small JPEG that is to be used on a web page).
What are the benefits of compressed files?
Compressed files, such as those with the extension .zip, make it so users can share and download a single file, rather than having to get them from many different locations or links. Compression has greatly improved the speeds at which images and music can be downloaded, as well as load times of Internet sites.