ModsJava
Bobby Sync
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
Bobby Sync enables the Client and Server to exchange map files (.mca) to have huge render distances immediately
⬇ Download on ModrinthBobbySync
Pre-download pre-generated chunks from your server directly into Bobby's cache, giving you massive render distances instantly.
Features
- 🌍 Multi-dimensional map-precaching (Overworld, Nether, End, modded)
- 🚦 Bandwidth limiting (default: 10MB)
- ✅ Intelligent download (only downloads new files)
Requirements
- Bobby ReNeoForged (required)
- Server- and Client-side installation of BobbySync
Usage
/bobbysync sync [radius] [dimension]- Download specified amount of chunks in another dimension/bobbysync sync [radius]- Download the specified amount of chunks around you/bobbysync sync [dimension]- Download all chunks of the specified dimension/bobbysync config- Open configuration screen/bobbysync cancel- Cancel active sync
Notes
- Does currently not work with modded dimensions
- May not work when specifying radius and dimension for the end
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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.
File checked by MCModsHub
- Ships as bobbysync-1.3.jar — drop this file into the mods folder
- Download size: 40 KB
- Download link checked 23 Sept 2026 — working
These come from our own check of the pack file, not from the source page.