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This WINRAR also enables the users to unzip or decompress files that are also downloaded from the internet. This file extension R03 is preceded by the files R01 and R02 which are also compressed by RAR in UNIX or Mac operating systems and in Windows operating systems, WINRAR. The file is a proprietary file format which is used by the RARLAB software. There are other applications that can access this file other than the WINRAR. In Windows, there is the Corel WinZip and the WINRAR from RARLAB. Macintosh and UNIX use the RAR from RARLAB which is a command line only.

Cannot open r03 files?

Not being able to open r03 files may be the result of not having the appropriate application installed or Operating System issues. You should ensure

1. The appropriate program is installed
2. Check your Operating System for invalid registry entries and other speed issues.

When the user makes the use of the WINRAR, it places him or her above the rest when it comes to the compressing of files by making smaller archives consistently than the other compression applications in the market which subsequently translates to saving transmission costs and saving disk space. Complete support for ZIP and RAR archives are supported or provided by with the WINRAR and are able to unpack CAB, TAR, UUE, ISO, Z, JAR, ACE, LHZ, 7Z, ARJ, GZ, and BZ2 archives. The application offers graphic interactive interface that utilizes mouse and menus also as well as interface that is command line.