WinRar




      WinRAR and the RAR file format have evolved over time. Support for the archive format RAR5, using the same RAR file extension as earlier versions, was added in version 5.0;[7] files in the older RAR file format have since been referred to as RAR4. WinRAR versions before 5.0 do not support RAR5 archives;[8] only older versions of WinRAR run on Windows versions prior to XP, and cannot open RAR5 archives.

The RAR5 file format increased the maximum dictionary size to 1 GiB; 11 different compression directory sizes from 1 MiB to 1 GiB are available, with the default in version 5 increased from 4 MiB to 32 MiB, typically improving compression ratio. AES encryption, when used, was increased from 128- to 256-bit. Maximum path length for files in RAR and ZIP archives is increased to 2048 characters.[8]





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