RAR

Also known as .rar, Roshal Archive, RAR format, RAR file format, RAR (Roshal Archive)

file format family

Key facts

Filename extension: .rar, .rev, .r00, .r01
Internet media type: application/vnd.rar
Uniform type identifier uti: com.rarlab.rar-archive
Magic number: 52 61 72 21 1A 07 00 , (RAR 1.5 to 4.0), 52 61 72 21 1A 07 01 00 , (RAR 5+)
Size limitation: 2 -1 bytes (almost 8 exbibytes )
Developed by: Eugene Roshal
Initial release: March 1993 ; 33 years ago ( 1993-03 )
Type of format: archive format
Free format: No (decompression source code publicly available, but not free software , with restriction that it "cannot be used to develop RAR (WinRAR) compatible archiver")
Website: rarlab.com

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RAR is a proprietary archive file format that supports data compression, error correction and file spanning. It was developed in 1993 by Russian software engineer Eugene Roshal and the software is licensed by win.rar GmbH. The name RAR stands for Roshal Archive.