SMRTR ProgrammingOct 28, 2025Dev.to

The Hidden Work Behind Gzip: How it compresses so well

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Gzip achieves remarkable compression by combining two powerful algorithms to eliminate redundancy in text files like CSVs. The LZ77 algorithm identifies repeated patterns and replaces duplicates with references to earlier occurrences, while Huffman coding assigns shorter binary codes to frequently used characters, dramatically reducing file size.

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