The file is a compressed archive format, commonly known as a RAR (Roshal Archive) file . It functions as a digital container that bundles one or multiple files into a single, smaller package to save storage space or make it easier to share over the internet. What is a .RAR File?
A .rar file is a proprietary archive format developed by Eugene Roshal. It is similar to a .zip file but often uses more advanced compression algorithms to achieve a higher compression ratio, resulting in even smaller file sizes. How to Open RAR Files on Windows, Mac, and Mobile - Avast