RAR

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File Format
Name RAR
Ontology
Extension(s) .rar
MIME Type(s) application/vnd.rar, application/x-rar-compressed
PRONOM x-fmt/264, fmt/411, fmt/613
Kaitai Struct Spec rar.ksy

Roshal ARchive (RAR) is a proprietary file format used by the compression software WinRAR. They make the decompression code available for use in other programs and allow its distribution, but with a license provision that "You cannot use the unrar source to re-create the RAR compression algorithm, which is proprietary."

Contents

File identification

Current versions start their files with (hex) 52 61 72 21 1A 07, followed by 00 or 01. Early versions (for which no format documentation is known) start with 52 45 7E 5E.

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