This is the Github Page of 7-Zip ZS with support of additional Codecs. The library used therefore is located here: Multithreading Library
You can install it in two ways:
- complete setup with additions within the GUI and a modified Explorer context menu
- only the codec plugin that goes to your existing 7-Zip installation (no GUI changes and no additional Hashers)
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Zstandard v1.5.7 is a real-time compression algorithm, providing high compression ratios. It offers a very wide range of compression / speed trade-off, while being backed by a very fast decoder.
- Levels: 1..22
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Brotli v.1.2.0 is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression.
- Levels: 0..11
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LZ4 v1.10.0 is lossless compression algorithm, providing compression speed at 400 MB/s per core (0.16 Bytes/cycle). It features an extremely fast decoder, with speed in multiple GB/s per core (0.71 Bytes/cycle). A high compression derivative, called LZ4_HC, is available, trading customizable CPU time for compression ratio.
- Levels: 1..12
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LZ5 v1.5 is a modification of LZ4 which was meant for a better ratio at cost of slower compression and decompression. It's superseded by Lizard now.
- Levels: 1..15
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Lizard v2.1 is an efficient compressor with fast decompression. It achieves compression ratio that is comparable to zip/zlib and zstd/brotli (at low and medium compression levels) at decompression speed of 1000 MB/s and faster.
- Levels 10..19 (fastLZ4) are designed to give about 10% better decompression speed than LZ4
- Levels 20..29 (LIZv1) are designed to give better ratio than LZ4 keeping 75% decompression speed
- Levels 30..39 (fastLZ4 + Huffman) adds Huffman coding to fastLZ4
- Levels 40..49 (LIZv1 + Huffman) give the best ratio, comparable to zlib and low levels of zstd/brotli, but with a faster decompression speed