
GreatCompactors
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthGreatCompactors
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GreatCompactors is a plugin that allows players to automatically compact items in their inventory, Hypixel Skyblock style.
Quick Start for Server Owners
This plugin works out of the box. Simply add the jar file to your plugins folder and restart your server.
You can give yourself the personal compactor item using /givecompactor.
By default, these are unobtainable in survival.
You can make your own method of getting them, or add a crafting recipe with my other plugin GreatCrafts.
The plugin ships by default with some built-in recipes, but you can add more. See the configuring section below for how to add your own recipes.
Quick Start for Players
Once you obtain the compactor, you can right click it to open the menu. In each slot, you can place an item that you want to receive. This is the output of the craft - for example, placing a gold block in the menu will automatically compact 9 gold ingots into 1 gold block.
Compacting is done automatically every time you pick up an item, with a short cooldown to prevent excessive lag.
Configuring
The recipe format is as follows:
personal-compactor-recipes:
...
- result: <Material>
result-count: <number to give>
ingredients:
<Material 1>: <number required>
<Material 2>: <number required>
...
For example, the default recipe for compacting 9 gold ingots into 1 gold block is:
- result: GOLD_BLOCK
result-count: 1
ingredients:
GOLD_INGOT: 9
Important notes:
- You receive
result-countofresultfor each set ofingredients. - Each entry in ingredients is the material (
GOLD_INGOThere) and the amount required (9here). - Each recipe can have as many ingredients as you'd like, and the ingredients required can exceed 64.
- Exact NBT matching is not checked for ingredients.
- For the material names (
resultand iningredients), use the Material enum names. It's usually the Minecraft/giveID in all capitals, but you can reference https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/Material.html if unsure.
Commands & Permissions
/givecompactor (requires greatcompactors.givecompactor) - Gives the player a personal compactor item.
Bug Reports
Please report any bugs you find on the issues page
Compiling
mvn package
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 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.
- Ships as greatcompactors-1.0.0.jar — drop this file into the mods folder
- Download size: 20 KB
- Download link checked 10 Nov 2026 — working
These come from our own check of the pack file, not from the source page.