: A popular, free, open-source alternative that can extract (but not create) RAR files.

: RAR can often shrink files to a smaller size than ZIP.

Do you know this file came from or what kind of "remnants" it's supposed to contain? Attach rar file in the mail - Cisco Community

If you are wondering why someone used RAR instead of a standard ZIP file, it’s usually for one of these reasons:

The .rar extension indicates it is a . Think of it as a digital "container" that shrinks the total size of the files inside to make them easier to store or send. 🛠 How to Open and Use It

: Large amounts of "remnants" can be split into multiple smaller parts (e.g., .part1.rar , .part2.rar ) for easier uploading.