RAR is an Archive File Format in which RAR stands for Roshal ARchive. RAR is a compressed file format developed by Eugene Roshal. Out of these formats, ZIP and RAR are the most popular among computer users. Compressed File can be in various formats like ZIP, RAR, 7Z, ZPI, ZIPX, GZIP and many others. Moreover, you can add number of files and folders together in one compressed file.Ī Compressed File is the collection archive of more than one files or folders and it’s smaller than their original size. Compressed Files are easy to share over internet and Wi-Fi. Many people use File Compression feature to create RAR File. Click the RAR file, and the contents inside will be listed in the middle of window. Click Add button of the menu bar to add your RAR files and your added RAR files will be listed on the left side of window. Open RAR files and preview before decompressing. It’s a lightweight yet powerful application. There are several apps for opening rar files on Mac, the one I recommend in this article is The Unarchiver. To be able to open RAR files on Mac, you will need to install a rar extractor. Mac natively only opens a number of compressed file formats, such as ZIP, TAR, or GZIP. How to Open RAR Files on Mac – Open and Extract RAR Files in Mac PC: