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  2. LZ77 and LZ78 - Wikipedia

    en.wikipedia.org/wiki/LZ77_and_LZ78

    LZ77 and LZ78 are the two lossless data compression algorithms published in papers by Abraham Lempel and Jacob Ziv in 1977 [1] and 1978. [2] They are also known as Lempel-Ziv 1 (LZ1) and Lempel-Ziv 2 (LZ2) respectively. [3] These two algorithms form the basis for many variations including LZW, LZSS, LZMA and others.

  3. Lossless compression - Wikipedia

    en.wikipedia.org/wiki/Lossless_compression

    Lempel-Ziv compression (LZ77 and LZ78) – Dictionary-based algorithm that forms the basis for many other algorithms Deflate – Combines LZ77 compression with Huffman coding, used by ZIP, gzip, and PNG images; Lempel–Ziv–Markov chain algorithm (LZMA) – Very high compression ratio, used by 7zip and xz

  4. Lempel–Ziv–Stac - Wikipedia

    en.wikipedia.org/wiki/Lempel–Ziv–Stac

    Lempel–Ziv–Stac (LZS, or Stac compression or Stacker compression [1]) is a lossless data compression algorithm that uses a combination of the LZ77 sliding-window compression algorithm and fixed Huffman coding.

  5. List of archive formats - Wikipedia

    en.wikipedia.org/wiki/List_of_archive_formats

    The compression algorithm is Deflate, which combines LZSS with Huffman coding. .lz application/x-lzip lzip: Unix-like An alternate LZMA algorithm implementation, with support for checksums and ident bytes. .lz4 LZ4: Unix-like Algorithm developed by Yann Collet, designed for very high (de)compression speeds. It is an LZ77 derivative, without ...

  6. Run-length encoding - Wikipedia

    en.wikipedia.org/wiki/Run-length_encoding

    On the previous example, this would give the following: WW12BWW12BB3WW24BWW14. This would be interpreted as a run of twelve Ws, a B, a run of twelve Ws, a run of three Bs, etc. In data where runs are less frequent, this can significantly improve the compression rate. One other matter is the application of additional compression algorithms.

  7. Lempel–Ziv–Storer–Szymanski - Wikipedia

    en.wikipedia.org/wiki/Lempel–Ziv–Storer...

    Lempel–Ziv–Storer–Szymanski (LZSS) is a lossless data compression algorithm, a derivative of LZ77, that was created in 1982 by James A. Storer and Thomas Szymanski. LZSS was described in article "Data compression via textual substitution" published in Journal of the ACM (1982, pp. 928–951). [1] LZSS is a dictionary coding technique. It ...

  8. Deflate - Wikipedia

    en.wikipedia.org/wiki/DEFLATE

    For example, a run of 10 identical bytes can be encoded as one byte, followed by a duplicate of length 9, beginning with the previous byte. Searching the preceding text for duplicate substrings is the most computationally expensive part of the DEFLATE algorithm, and the operation which compression level settings affect.

  9. Brotli - Wikipedia

    en.wikipedia.org/wiki/Brotli

    Brotli is a lossless data compression algorithm developed by Google. It uses a combination of the general-purpose LZ77 lossless compression algorithm, Huffman coding and 2nd-order context modelling. Brotli is primarily used by web servers and content delivery networks to compress HTTP content, making internet websites load faster.