
Item Group Creator
Create custom groups in the creative inventory, with support for NBT and items from other mods.
Screenshots



About this Mod
Item Group Creator
Item Group Creator is a Fabric mod designed to allow, through JSON files within the mod's own resources, both on the client and server side, the addition of new sections in the creative inventory.
What can you do?
- Create new inventory groups with custom names and icons.
- Include items from any mod.
- Include base Minecraft items.
- Configure specific NBTs for items.
These sections are fully configurable and support NBTs and items from other mods, allowing you to organize all your content.
Important version note
Be careful with Minecraft versions:
In 1.21.1, item components use square brackets [...]
In 1.20.4 and below, items use classic NBT {...}
Note: Each example below is already adapted to its correct version. Make sure you use the correct format for your server/version, otherwise items may not work or groups may fail to load.
Configuration path
To create your own groups, place the JSON files in the following path:
data/itemgroupcreator/groups/
Note: The inner folder
/groupsis where the mod looks for the different item JSON files when starting the game or server.
Group example 1.20.4
{
"id": "groupcreator:basic_tools",
"name": "Basic Tools",
"icon": "minecraft:iron_pickaxe",
"items": [
"minecraft:wooden_pickaxe",
"minecraft:stone_pickaxe",
"minecraft:iron_pickaxe",
"minecraft:diamond_pickaxe",
"minecraft:golden_pickaxe"
]
}
Group example with NBTs 1.20.4
{
"id": "groupcreator:adventure_items",
"name": "Adventure Items",
"icon": "minecraft:blaze_rod",
"items": [
"minecraft:blaze_rod{display:{Name:'{\"text\":\"Fire Wand\",\"italic\":false}'}}",
"minecraft:ender_pearl{display:{Name:'{\"text\":\"Teleport Wand\",\"italic\":false}'}}",
"minecraft:shield{display:{Name:'{\"text\":\"Protective Shield\",\"italic\":false}'}}",
"minecraft:arrow{display:{Name:'{\"text\":\"Arrow\",\"italic\":false}'}}"
]
}
Group example 1.21.1
{
"id": "groupcreator:basic_tools",
"name": "Basic Tools",
"icon": "minecraft:iron_pickaxe",
"items": [
"minecraft:wooden_pickaxe",
"minecraft:stone_pickaxe",
"minecraft:iron_pickaxe",
"minecraft:diamond_pickaxe",
"minecraft:golden_pickaxe"
]
}
Group example with NBTs 1.21.1
{
"id": "groupcreator:adventure_items",
"name": "Adventure Items",
"icon": "minecraft:blaze_rod",
"items": [
"minecraft:blaze_rod[minecraft:custom_name='{\"text\":\"Fire Wand\",\"italic\":false}']",
"minecraft:ender_pearl[minecraft:custom_name='{\"text\":\"Teleport Wand\",\"italic\":false}']",
"minecraft:shield[minecraft:custom_name='{\"text\":\"Protective Shield\",\"italic\":false}']",
"minecraft:arrow[minecraft:custom_name='{\"text\":\"Arrow\",\"italic\":false}']"
]
}
Note: When starting the game or server, the console will indicate which groups were created successfully and which were not.
Available Versions
How to Install Item Group Creator on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Item Group Creator". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.20.4
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Item Group Creator server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Item Group Creator compatible with fabric?
Item Group Creator officially supports fabric for Minecraft 1.21.1, 1.20.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Item Group Creator – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Item Group Creator consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Item Group Creator with just one click on your server.