: It can ingest external files as dictionaries to improve the compression ratio of small, similar files.
Once you have the tool ready, there are several advanced scenarios and features to explore to maximize the utility of the LZ4 codec.
Standard 7-Zip is the gold standard for high compression ratios, but sometimes you just need . While the official version lacks native support for the ultra-fast LZ4 algorithm, a popular "modded" fork called 7-Zip ZS fills that gap perfectly.
| Tool | LZ4 Support | Pros | Cons | | :--- | :--- | :--- | :--- | | | Native | Official, extremely fast | No GUI, no folder recursion easily | | PeaZip | Yes | Free, open-source, supports LZ4 out of the box | Slower interface, fewer updates | | Nanazip (Windows Store) | No (but has Zstd) | Modern UI | LZ4 missing | | WinRAR 7.0+ | No (RAR5 only) | N/A | No LZ4 | modded 7zip for lz4
Why mod 7-Zip for LZ4?
The "modded 7zip for lz4"—specifically the 7-Zip ZS fork—bridges the gap between the legacy world of high-ratio compression and the modern need for speed. Whether you are unpacking Samsung firmware, setting up a high-speed backup routine, or simply tired of waiting for large folders to compress, this mod unlocks the raw potential of the LZ4 algorithm. By understanding the command line switches and the specific use cases for LZ4, you can significantly speed up your data workflows without abandoning the familiar 7-Zip interface.
Understanding the "why" is just as important as the "how." Here is where a modded 7-Zip with LZ4 outshines the original. : It can ingest external files as dictionaries
Within the mcmilk/7-Zip-zstd fork, the LZ4 ecosystem is further expanded by the "Lizard" codec. Lizard is not just LZ4; it is an efficient compressor that offers performance profiles allowing for improved decompression speeds. Specifically, its "fastLZ4" levels (10–19) are designed to give you about than standard LZ4. If your priority is extracting data as fast as physically possible, experimenting with -m0=lizard and a level around 10 can provide marginal but noticeable gains over standard LZ4 v1.10.
Decompressing large archives takes seconds rather than minutes.
You do not have to learn a new command-line tool; you use the same 7-Zip interface you already know. Performance Comparison: LZMA2 vs. LZ4 While the official version lacks native support for
While the speed is intoxicating, there are caveats:
Zstandard, Brotli, Fast-LZMA2, Lizard, and LZ5.
Similar to the Zstd fork, this project focuses on "extra" codecs. It is frequently used in the gaming community for repacking assets where decompression speed is critical for fast load times. How to Use LZ4 in 7-Zip
It includes both a graphical interface and command-line support, just like the official 7-Zip. How to Use LZ4 in 7-Zip ZS Download and Install: Obtain the latest version of 7-Zip ZS from GitHub Compress Files: Right-click the files you want to archive, select , and choose