

Allows the use of the 1.21.11 model format in older versions with the help of black magic, specifically allowing all three axis (XYZ) rotation and incrementes larger/smaller than 22.5°, additionally removing the 3x3x3 size constraint.
Example

File: assets/minecraft/models/block/diamond_block.json
{
"format_version": "1.21.11",
"textures": {
"all": "block/diamond_block"
},
"elements": [
{
"from": [0, 0, 0],
"to": [16, 16, 16],
"rotation": {"x": 45, "y": 45, "z": 45, "origin": [8, 8, 8]},
"faces": {
"north": {"uv": [0, 0, 16, 16], "texture": "#all"},
"east": {"uv": [0, 0, 16, 16], "texture": "#all"},
"south": {"uv": [0, 0, 16, 16], "texture": "#all"},
"west": {"uv": [0, 0, 16, 16], "texture": "#all"},
"up": {"uv": [0, 0, 16, 16], "texture": "#all"},
"down": {"uv": [0, 0, 16, 16], "texture": "#all"}
}
}
]
}
Supports both rotation types:
All axis rotation
"rotation": {
"x": 45,
"y": 45,
"z": 45,
"origin": [
8,
8,
8
]
}
Single axis rotation
"rotation": {
"angle": 45,
"axis": "y",
"origin": [
8,
8,
8
]
}
Maven
repositories {
maven { url 'https://jitpack.io' }
}
dependencies {
modImplementation 'com.github.Nico44YT:ModernModelFormat:<version>'
}
Version generally is comprised of "_" e.g: "1.3.0-1.19.3-1.21.3"
Issues
If you have found an issue please report it on the github, along with (if applicable):
- any logs
- the model
- a screenshot
- the game version
- modlist
My models are not loading anymore
Try checking the model file for any extra brackets {} because Modern Model Format ensure a strict json validation.
Example:
[18:30:32] [Worker-Main-2/ERROR]: Failed to load model mod_id:models/item/example_item.json
com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 506 path $
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.19.3, 1.19.4, 1.20
- 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 ModernModelFormat-1.3.0.jar — drop this file into the mods folder
- Download size: 17 KB
- Download link checked 21 Aug 2026 — working
These come from our own check of the pack file, not from the source page.

