ModsJava
Chunkumulator
Optimizes chunk sending for worse quality connections to the server, allowing them to start playing as soon as they join.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Chunkumulator
Optimizes chunk sending for worse quality connections to the server, allowing them to start playing as soon as they join.
Known Incompatibilities:
- C2ME
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20, 1.20.1
- 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 chunkumulator-1.1.1+MC1.20.1.jar — drop this file into the mods folder
- Download size: 97 KB
- Download link checked 27 Aug 2026 — working
These come from our own check of the pack file, not from the source page.