Assuming you have installed the modded 7-Zip ZS build:
The primary way to use within 7-Zip is through a popular fork known as 7-Zip ZS (Zstandard) or by adding the Modern7z plugin to a standard installation . Standard 7-Zip does not natively support LZ4. Overview of 7-Zip ZS (Modded Version)
Modded 7-Zip for LZ4
Have you tried a modded 7‑Zip fork? Share your LZ4 compression speeds in the comments below or join the discussion on r/DataHoarder.
: It’s one of the fastest compressors available, often reaching 400 MB/s per core during compression and several GB/s during decompression. modded 7zip for lz4
A .7z archive compressed with LZ4 cannot be opened by the official 7‑Zip. It will throw an “Unsupported compression method” error. Recipients must also use the modded version. If you want cross-compatibility, use .zip with LZ4 (less common) or stick to standard formats.
Here’s an interesting, concise write-up on the topic: Assuming you have installed the modded 7-Zip ZS
When you download the 7-Zip ZS version, you are essentially getting a enhanced 7-Zip GUI that allows you to select "LZ4" in the compression method dropdown menu. How to Use Modded 7-Zip for LZ4
Users who want Windows 11 context menu integration, modern UI aesthetics, and built-in LZ4 support without manual tweaking. How to Install and Use Modded 7-Zip for LZ4 Share your LZ4 compression speeds in the comments
7z a archive.7z -m0=lz4 -mx[level] your_file.txt
: Blazing speed reaching 400+ MB/s per core during compression, and multiple GB/s per core during decompression.