If you need to open a file with the rar extension on your Mac, there's a handy app called The Unarchiver that can help you do just that. Rar files are commonly used to extract a huge amount of data — ...

If you need to send a set of files to another user via email or attach a link to a cloud drive, you might have to compress the folder containing files to send it. This is to save internet data, time, ...