Screenshot 1 of 1. Krypton mod icon on the Modrinth project page
What Krypton works with.
| Platform | Java Edition |
|---|---|
| Loaders | Fabric |
| Minecraft versions | 1.16.2, 1.16.5, 1.17.1, 1.18.2, 1.19.4, 1.20.6, 1.21.11, 26.1.2, 26.2, 26.3 |
| Environment | Client, Server |
Krypton is a Fabric mod for Minecraft Java Edition that optimizes the networking stack. It is optional on the client and on the server, so you can install it on either side or both. Releases cover 1.16.2 through 26.3, the newest being 0.3.2, and none of them require another mod.
What Krypton changes
The mod derives from work done in the Velocity and Tuinity projects. Astei, who develops the Velocity proxy, wrote it. Most of the benefit is hidden from players and shows up for server administrators, as lower CPU use and shorter tick times.
- Netty handlers taken from Velocity, tested in real-world use, with native code where it makes the most sense
- Flush consolidation, which lowers server CPU usage and tick times
- Micro-optimizations that cut memory use and speed up packet serialization
Compatibility and limits
Krypton is tuned for Linux, though it should run anywhere Minecraft does. The author tries to keep it working with Fabric API, Lithium and Sodium. Support for other mods is limited. It is a Fabric-only mod, with no Forge, NeoForge or Quilt builds.
Installation
- 1.Install Fabric Loader for the Minecraft version you play. The Fabric install guide covers it.
- 2.Download the Krypton .jar that matches that Minecraft version.
- 3.Put the .jar in the mods folder inside your Minecraft game directory (.minecraft/mods by default). No other mod file is required.
- 4.Launch Minecraft with the Fabric profile.
Questions about Krypton.
4 questions
Which Minecraft versions does Krypton support?
Krypton has Fabric releases for Minecraft Java Edition from 1.16.2 up to 26.3. The newest release is 0.3.2. Pick the file that matches your installed game version, because a Fabric mod only runs on the version it was made for.
Does Krypton need Fabric API?
No. The newest release lists no required dependencies, and neither do the earlier ones. You still need Fabric Loader installed for your Minecraft version. The author also tries to keep Krypton working alongside Fabric API when both are installed.
Does Krypton work on Forge or NeoForge?
No. Krypton is published for Fabric only. There are no Forge, NeoForge or Quilt releases, so a profile on another loader will not load it. Use a Fabric profile for the version you want to play.
Does Krypton work with Sodium and Lithium?
The author tries to keep it working with Fabric API, Lithium and Sodium. Support for other mods is limited, with no guarantee of stability or compatibility. Krypton is tuned for Linux, though it should run anywhere Minecraft does.
