WoW LibDeflate addon Dragonflight/Wrath of the Lich King Classic 2024
wow addon LibDeflate


Game Version: 8.3.0
Total Downloads: 1,413
Updated: Jun 26, 2020
Created: May 12, 2018
download LibDeflateDownload Earlier Versions

Earlier Versions

Name Size Uploaded Game Version Downloads
1.0.2-release release 61.66 KB Jun 26, 2020 8.3.0 136 download LibDeflate 1.0.2-release releaseDownload
1.0.1-release release 69.92 KB Nov 23, 2019 8.2.5 374 download LibDeflate 1.0.1-release releaseDownload
1.0.0-release release 67.98 KB Jul 29, 2018 8.0.1 663 download LibDeflate 1.0.0-release releaseDownload
0.9.0-beta4 beta 64.11 KB May 25, 2018 8.0.1 61 download LibDeflate 0.9.0-beta4 betaDownload
0.9.0-beta3 beta 62.00 KB May 23, 2018 8.0.1 13 download LibDeflate 0.9.0-beta3 betaDownload
0.9.0-beta2 beta 61.17 KB May 22, 2018 8.0.1 +1 74 download LibDeflate 0.9.0-beta2 betaDownload
0.9.0-beta1 beta 60.70 KB May 22, 2018 8.0.1 12 download LibDeflate 0.9.0-beta1 betaDownload
0.9.0-alpha2-test-curseforge-10-g84b6558-alpha alpha 60.73 KB May 22, 2018 8.0.1 18 download LibDeflate 0.9.0-alpha2-test-curseforge-10-g84b6558-alpha alphaDownload
0.9.0-alpha2-test-curseforge-6-g98b45aa-alpha alpha 60.42 KB May 22, 2018 8.0.1 8 download LibDeflate 0.9.0-alpha2-test-curseforge-6-g98b45aa-alpha alphaDownload
0.9.0-alpha2-test-curseforge-5-g9f25f7b-alpha alpha 60.42 KB May 22, 2018 8.0.1 11 download LibDeflate 0.9.0-alpha2-test-curseforge-5-g9f25f7b-alpha alphaDownload
0.9.0-alpha2-test-curseforge-4-gf790106-alpha alpha 60.42 KB May 22, 2018 8.0.1 12 download LibDeflate 0.9.0-alpha2-test-curseforge-4-gf790106-alpha alphaDownload
0.9.0-alpha2-test-curseforge-3-gd28c872-alpha alpha 43.81 KB May 22, 2018 8.0.1 11 download LibDeflate 0.9.0-alpha2-test-curseforge-3-gd28c872-alpha alphaDownload
0.9.0-alpha2 alpha 61.44 KB May 21, 2018 8.0.1 +1 11 download LibDeflate 0.9.0-alpha2 alphaDownload alpha 62.30 KB May 20, 2018 8.0.1 +1 9 download LibDeflate alphaDownload


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Pure Lua compressors and decompressors with high compression ratio using DEFLATE/zlib format.


LibDeflate is pure Lua compressor and decompressor with high compression ratio, which compresses
almost as good as zlib. It compresses using the same algorithm as ZIP.


Documentation is hosted on Github.


Below is a simple benchmark compared with another pure Lua compressor LibCompress.

The size of The input data is 158492 bytes. The benchmark runs on Lua 5.1.5 interpreter.

NOTE: The compression method used by LibDeflate here is LibDeflate:CompressDeflate (Compress using raw DEFLATE format)

LibCompress (LZW): 1.20 compression ratio in 52ms.

LibCompress (Huffman): 1.36 compression ratio in 50ms.

LibDeflate(Level 1): 3.15 compression ratio in 68ms.

LibDeflate(Level 5): 3.68 compression ratio in 116ms.

LibDeflate(Level 8): 3.71 compression ratio in 189ms.

LibDeflate with compression level 1 compresses as fast as LibCompress, but already produces significantly smaller file than LibCompress. High compression level takes a bit more time to get better compression.


See examples/example.lua

Real Project Sample Code (With backward compatibility)

WeakAuras2 commit c46a8f26

Other places to get LibDeflate

  1. LibDeflate is also uploaded to WoWInterface. The releases on WoWInterface and Curseforge are identical.
  2. You can also get LibDeflate from LuaRocks using the command "luarocks install libdeflate", if you are not using the Lua interpreter in World of Warcraft.
  3. All release files can also be downloaded from the Github release page


LibDeflate is licensed under the zlib license.

Credits and Disclaimer

The following projects are used to the help to test the correctness of this program. The code of the main program (LibDeflate.lua) does not use their code directly, but uses their ideas and algorithms. Their original licenses shall be comply when used.

zlib, by Jean-loup Gailly (compression) and Mark Adler (decompression). Licensed under zlib License.
puff, by Mark Adler. Licensed under zlib License.
LibCompress, by jjsheets and Galmok of European Stormrage (Horde). Licensed under GPLv2.
WeakAuras2. Licensed under GPLv2.


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