.BZ2 File Extension
Bzip2 Compressed File
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What is a BZ2 file?
Compressed archive created by bzip2, a file compression program often found on Unix-based systems; incorporates the Burrows-Wheeler compression algorithm as well as Run-Length Encoding (RLE) for high levels of compression; often used for Linux software package distributions.
The bzip2 software is available in a source code format on the bzip2 website and can be compiled on Windows systems.