It is quite easy to compress a single file or multiple files and folders into a ZIP file archive on your Mac. You can also decompress ZIP files by double-clicking it. This is useful for sending files online or for saving files that you no longer need. The File Tool is invisible to both commands, but you can run this app yourself and choose from several options when compressing or decompressing ZIP files.
Check out how to zip and extract files on your Mac on YouTube for closed captions and more options.