
What is This
This is a Forge 1.20.1 port of ImproperUI.
What is it used for
The ultimate solution to Minecraft Rendering being too hard to learn.
Original Module Introduction
The ultimate solution to Minecraft Rendering being too hard to learn.
Introduction
Unlike my other project, ClickCrystals Script, ImproperUI Script requires you to have prior knowledge of
- Basic CSS properties and how they work
- Basic HTML structures
- Java
ImproperUI's syntax is highly inspired by CSS (Cascading Style Sheets), thought it is not entirely identical.
Below is a screenshot of an interactive screen with draggable and scrollable elements as the home page of the mod. This screen is scripted using ImproperUI Script:

How to use it
Look This
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- 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 iui_forge-1.20.1-0.0.5.0.jar — drop this file into the mods folder
- Download size: 1.5 MB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.