They support data compression, error recovery, and file spanning (splitting large files into smaller parts).

the archive (e.g., documents, images, software)? What device/operating system are you using?

Use an app or the terminal with Homebrew to extract RAR files.

Note: If the archive is password-protected and the password is forgotten, the files inside cannot be accessed.

Right-click the .rar file and select "Extract All," or use built-in Windows features.