LHA Converter

The LHA format (originally known as LHarc) is a lossless compressed archive container developed by Haruyasu Yoshizaki in 1988. It implements the Lempel-Ziv-Huffman (LZH) algorithm, a hybrid compression method combining LZ77 sliding-window dictionary compression with static Huffman coding for entropy encoding. Historically significant on Amiga and MS-DOS platforms and remaining a standard in Japanese software distribution, the format utilizes a header structure containing file attributes, timestamps, and a 16-bit Cyclic Redundancy Check (CRC-16) to verify data integrity across compressed volumes.

Native support for the LHA architecture is generally absent in modern operating system kernels such as Windows 10/11 or macOS Ventura. To access the contents, users must employ third-party extraction utilities capable of parsing the LZH algorithm. 7-Zip is the recommended solution for Windows environments; macOS users should utilize The Unarchiver for extraction. On Linux distributions, the lha or lzh command-line utilities can be installed via package managers like APT or RPM to handle decompression.