Modded 7zip For Lz4 Now
The -m0=lz4 switch in the CLI or GUI settings 1.2.1 .
LZ4 can compress and decompress data at speeds approaching the limits of RAM and SSD bandwidth.
: The input stream is divided into equal blocks, allowing each block to be compressed in a separate thread for multi-core acceleration. BCJ2 Filter Warning
This is the "interesting" version you are likely looking for. It is a fork that adds several modern compression methods directly into the 7-Zip UI and command line. Supported Codecs: Adds LZ4, Zstandard (Zstd), Brotli, Lizard, and Lz5. The LZ4 Advantage: LZ4 is designed for extreme speed
7-Zip is a popular open-source file archiver that uses the LZMA/LZMA2 compression algorithms. LZ4 is an alternative compression algorithm optimized for extremely fast compression and decompression with lower compression ratios. A “modded 7-Zip for LZ4” refers to versions or forks of the 7-Zip codebase that have been modified to add support for LZ4 as a compression method or to integrate LZ4-based features. modded 7zip for lz4
Breakdown : a stands for add; archive.7z is the output name; -m0=lz4 selects the LZ4 codec; -mx9 sets a mid-to-high speed/ratio balance; files_to_archive/* is the source target.
By default, official 7-Zip does not support LZ4. To bridge this gap, independent developers have created "modded" versions of 7-Zip that integrate the LZ4 algorithm directly into the familiar 7-Zip interface. Why You Need LZ4 in 7-Zip
Standard 7-Zip is slow. Compressing a 10GB virtual machine image or a folder of high-resolution textures using LZMA can take minutes.
: Copy the .dll files from the Modern7z package into that Codecs folder. The -m0=lz4 switch in the CLI or GUI settings 1
Enter the niche but powerful concept of a . While Igor Pavlov’s official 7-Zip does not natively support the LZ4 algorithm, the open-source community has stepped in. They have created modified forks (modded versions) that integrate LZ4 —a compression algorithm designed for sheer velocity.
While lower than LZMA, it is efficient enough to save space without creating a CPU bottleneck.
Follow these steps carefully.
: Blazing speed reaching 400+ MB/s per core during compression, and multiple GB/s per core during decompression. BCJ2 Filter Warning This is the "interesting" version
The most prominent "modded" version is , developed by Tino Reichardt. This fork integrates several alternative compression algorithms that are not part of the official 7-Zip mainline, including LZ4 , Zstandard (Zstd) , Brotli , and Lizard .
However, users soon found themselves in situations where they didn't need the smallest file; they needed the fastest one. They wanted to compress logs, game assets, or real-time backups at hundreds of megabytes per second without their CPUs breaking a sweat. This was the territory of , an algorithm by Yann Collet designed for extreme performance. The Modders Step In
If you run a local SQL database or a VM sandbox, dumping the folder to an LZ4 7z file takes seconds, minimizing downtime.
The official 7-Zip cannot unpack these .lz4 files. Users rely on the "Modded 7Zip for LZ4" to right-click these files and select "Extract Here" to access the raw boot.img or system.img for flashing via Odin.
