Follow these steps carefully.
Before you rush to download a mod, ask yourself: Do you really need max speed over max ratio?
Most people know 7‑Zip as the reliable, open‑source archiver that handles ZIP, RAR, and its own ultra‑compressed 7z format. But under the hood, 7‑Zip is also a modular compression platform. And that’s where things get interesting. modded 7zip for lz4
Enter: a modded version of 7‑Zip with native LZ4 support.
Since both 7‑Zip (LGPL) and LZ4 (BSD) are open source, modded builds are legal and common. However, they’re unofficial — you won’t find LZ4 in Igor Pavlov’s original branch. Stick to builds from trusted sources to avoid backdoors or broken archives. Follow these steps carefully
The most trusted modded version is maintained by GitHub user mcmilk (Henrik K. Jensen). It is often called "7-Zip ZS" because it adds Zstd, LZ4, and LZ5.
Where to find it:
Installation:
Once installed, using LZ4 is slightly hidden inside the GUI. Here is the procedure: Installation: Once installed, using LZ4 is slightly hidden
If you don’t want a modded build, use native tools:
For a folder containing 1000 small text files (logs or source code), a standard 7-Zip takes 3 seconds to compress. A modded 7-Zip with LZ4 takes 0.3 seconds. The archive will be larger, but the bottleneck shifts from the CPU to your SSD speed.