RedFreez is a Paper/Purpur plugin for Minecraft 1.21.x (tested on 1.21.11) that helps server owners find and control potential redstone lag hotspots. It can scan loaded chunks to highlight high-risk areas (based on redstone components) and lets admins freeze specific chunks to prevent heavy redstone activity. Players can also check whether the chunk they are standing in is frozen using /redfreez status
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as RedFreez-1.4.0.jar — drop this file into the mods folder
- Download size: 55 KB
- Download link checked 22 Aug 2026 — working
These come from our own check of the pack file, not from the source page.