For instance, when sharing a group of photos or files with someone over email, compressing can help reduce the size of the files to fit within the generally tight size restrictions of email. There are several reasons you might want to create a ZIP archive.
Among the new features is the ability to compress a file or series of files into a standard ZIP archive right from your iPhone. In iOS 13, Apple finally took the built in Files app from an extremely rudimentary file browser to a full featured app that can serve the needs of most any user.