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Forge CIT Mod for Minecraft 1.20.1, 1.21.1

Ports Optifine Custom Item Textures to Forge

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Updated
Updated 17.10.2026

About the Forge CIT mod

Forge CIT

Forge CIT is an Unofficial Fork of CITResewn made to work with Forge Mod Loader.

Note: Please avoid reporting CIT Forge's issues on the CITResewn Github, report to linked issues page instead

Why do I want this?

Forge CIT is MCPatcher's CIT features re-written outside of Optifine as a standalone mod for forge.

MCPatcher had a feature called Custom Item Textures (or CIT for short) which was later adopted by Optifine.

Custom Item Textures allowed resourcepacks to replace the appearance of items when they met certain conditions.

Forge CIT does exactly that but as a standalone Fabric mod which does not require MCPatcher nor Optifine!

On top of that, Forge CIT aims to build upon the concept of CITs by expanding the available types and conditions.

More info on how to use them can be found on the CIT Resewn docs page

How is it different than MCPatcher/Optifine's CIT?

CIT Resewn is intended to be fully backwards compatible with the old Optifine/MCPatcher packs. Though there are some key differences.

First, the numeric id system was removed since the Flattening. Packs utilizing the so called "magic numbers"

instead of the new text ids will not work.

Second, Optifine and old minecraft versions have a bug which allows resourcepacks to put files in malformatted(or "broken") paths.

These are paths that contain "Non (lower cased) a-z, 0-9, dots, underscores and dashes" characters within either the file name or its parent directories.

These packs will no longer work and have to be manually fixed

Lastly, to ensure compatibility with foreign packs, CITs will be loaded from .properties files under: assets/minecraft/citresewn/cit assets/minecraft/optifine/cit assets/minecraft/mcpatcher/cit

Does Forge CIT support Optifine/Rubidium?

While Forge CIT is designed to work without any performance mod needed, there will be a good faith attempt to make it work with Rubidium although there is no guarantees.

With that said, there will be no support for Optifine at all.

FAQ

Q: When will you make a Fabric Port? A: Use the original CIT Resewn mod

Q: When will you backport to <version>? A: This mod only officially supports 1.20.1+, no backports or bugfixes for older versions will be considered.

Need a custom mod for a reasonable fee? Just want to chat? Have a complex issue needing additional discussion? Join the Discord:

Want to help support this mod and others? donate to my Patreon in the link below

How to install Forge CIT

With Millida Launcher

  1. Install Millida Launcher

    The launcher is free: download it at millida.net/launcher and sign in with any nickname.

  2. Click “Install” on this page

    The launcher opens and installs the mod for Minecraft 1.20.1–1.21.1 on Forge or NeoForge automatically.

  3. Launch the game

    A profile with it appears in the launcher: click “Play”.

Manually

  1. Install Forge or NeoForge

    The loader must match the game version of the mod file, for example Minecraft 1.21.1. After installing it, a separate profile appears in your launcher.

  2. Download the file for your version

    In the version list above, pick the file citresewn-neoforge-1.21.1-0.jar (199 KB) for your game version and loader.

  3. Put it in the mods folder

    The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.

  4. Launch the loader profile

    Open “Mods” in the main menu: Forge CIT should be in the list.

Minecraft 1.21.1 runs on Java 21: with a different Java version the game may close right after launch.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.21.1NeoForgecitresewn-neoforge-1.21.1-0.jar199 KB
1.20.1Forgecitresewn-1.20.1-5.jar184 KB 3

FAQ

Which Minecraft versions does Forge CIT work on?

There are files for 1.21.1, 1.20.1. The newest is 1.21.1.

Is Forge CIT for Forge or Fabric?

There are files for Forge: 1.20.1 and for NeoForge: 1.21.1. There are no files for Fabric: a mod for another loader will not start.

Which Java does Forge CIT need?

Minecraft 1.21.1 runs on Java 21. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.

Where can I download Forge CIT safely?

On this page: the file citresewn-neoforge-1.21.1-0.jar (199 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: bda1b3a3f23d8dd1309055b00f9e8bc64b4f7469.

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