Files that contain the .rar file extension are archive files that have been created by the WinRAR file archiving software. The WinRAR application takes large files or collections of files and compresses those files into a single archive file.
Compressed files makes it easier for users to share files via email and over the Internet. For example, if you needed to email multiple file attachments to an individual, you could compress them into a single RAR file, sending one attachment rather than many.
When the WinRAR archiver creates an archive, the resulting archive file is given the .rar file extension. RAR files are very similar to ZIP files but WinRAR uses a different compression algorithm, often resulting in smaller files.
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