Byte order: Little-endian Overall zipfile format: [Local file header + Compressed data [+ Extended local header]?]* [Central directory]* [End of central directory record] Local file header: Offset Length Contents 0 4 bytes Local file header signature (0x04034b50) 4 2 bytes Version needed to extract 6 2 bytes General purpose bit flag 8 2 bytes Compression method 10 2 bytes Last mod file time 12 2 b