ModsFinder

NMB. New Models Backport

by ProstoMaslo

New Models Backport lets Minecraft 1.21.1 NeoForge load block and item JSON models written in the newer model format.

NeoForgeClient required, server optionalMIT LicenseOpen source1.21.1

What it does

Newer Minecraft releases use an updated JSON model format, and this mod adds the layer that lets 1.21.1 read those models. Map makers and resource pack creators can load modern models without updating the game itself. Rotation angles produced by Blockbench are supported in full, since the usual fixed step limit is removed.

The mod is a single-purpose utility, so it adds no content and no large set of features beyond model loading. Players and server owners who want only this function can install it without carrying a bigger library. The client needs the mod to display the models, while a server can run without it. The mod is released under the MIT License and its source code is open.

Key features

  1. Modern model format

    Block and item JSON models written for newer Minecraft releases load on 1.21.1 through this backport.

  2. Arbitrary rotation

    Element rotation accepts any angle exported from Blockbench, with no fixed step size.

  3. Ignore light property

    A model element can be set to render at maximum brightness, ignoring shadows and world lighting.

Compatibility

Latest build for each game version and loader.

1.21.11.0.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Use cases

Resource pack models

Resource pack creators can ship models in the modern format and expect them to render on 1.21.1.

Map making

Map makers can build custom block displays from models exported with current tools.

Who it’s for: Resource pack creators, map makers and players who want modern JSON models on NeoForge 1.21.1 without adding a large library of other features.

Questions

Does New Models Backport need a server install?

No. The client must run it to display the models, while a server may leave it out and still run without it.

Which loader and version does it target?

The mod is published for NeoForge only, and its single game version is 1.21.1. The latest file is 1.0.1, published on 2026-06-06.

Does the mod change how blocks behave?

It only changes how models are loaded and rendered. It adds no blocks, items or gameplay mechanics of its own.

In the catalog

NMB. New Models Backport is one of 3,514 Library mods on ModsFinder, and one of 1,449 Library mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

Library mods3,514NeoForge modsMods for 1.21.132,366

More from ProstoMaslo

All projects
Fast Assets1.20.1 – 1.21.1

Similar mods

Cloth Config API1.14 – 26.3YetAnotherConfigLib (YACL)1.19 – 26.3Architectury API1.16.5 – 26.3Just Enough Items (JEI)1.8 – 26.3Geckolib1.12.2 – 26.3Forge Config API Port1.16 – 26.3

What the author says

New Models Backport is a utility mod for Minecraft 1.21.1 (NeoForge). It allows map makers and resource pack creators to natively load and render modern JSON models (1.21.11+ format) in version 1.21.1. It was designed for use in very specific and personal situations. (When you don't want to lug around a massive…
ProstoMaslo, on the Modrinth page

Official listing

Owner
ProstoMaslo
Published
2026-06-05
Updated on Modrinth
2026-06-06
Facts verified
2026-10-15

Tags

DecorationLibraryUtility
Open on ModrinthCompare