A simple client-side mod that customizes the block outline in Minecraft. Lightweight and built with Fabric API.

Blocky Outline

Blocky Outline is a highly polished, premium client-side Fabric mod for Minecraft that completely transforms how you interact with the world by adding highly customizable block-targeting outlines and solid face fills. Say goodbye to the boring, static default outline—with Blocky Outline, you can fully personalize your targeting visual style to match your aesthetic!

✨ Features

• Custom Block Outlines & Face Fills: Choose between rendering a beautiful custom outline around targeted blocks, a sleek translucent solid face fill, or both at the same time.
• Dynamic HSL Rainbow Transitions: Elevate your game with gorgeous, smooth color transitions. Configure a dynamic rainbow effect that shifts through the HSL spectrum with adjustable speeds.
• Vibrant & Precise Color Customization: Tweak red, green, blue, and alpha/opacity channels individually to create perfect custom colors for both the outline and the fill.
• Sodium, Iris & Canvas Compatibility: Built with advanced modern rendering methods. The mod utilizes a double-faced vertex consumer structure and a micro-inflation factor (0.005D) to completely eliminate z-fighting, backface culling, or clipping issues commonly found when using modern performance shaders like Iris and Sodium.
• Native Keybinding Integration: Seamlessly integrated into Minecraft’s native control settings. Simply press the M key (fully rebindable in the standard Controls options) to open the interactive customization menu screen in-game.
• Frame-Synchronized Caching: Implements intelligent rendering pipeline optimization to prevent rendering bugs (such as outline elements getting stuck to the ground), ensuring buttery-smooth performance.
• Client-Side Only: Purely client-side! You can join any multiplayer server, vanilla or modded, and enjoy your stunning custom block highlights.

🛠️ Configuration & Customization

Once you are in-game, simply press M to open the customizer dashboard. From there, you can toggle:

1. Outline Mode: Adjust the outline width, transparency (alpha), and exact color.
2. Fill Mode: Enable or disable targeted block face highlighting, customize its transparency so it doesn't block your view, and configure independent custom colors or HSL rainbow transitions.

🚀 Installation & Versions

This mod is optimized for Minecraft 1.21+ (fully verified on 1.21.11) and requires:

• Fabric Loader (>=0.19.2)
• Fabric API

Simply drag the .jar file into your mods folder and you are ready to play!

Created by CharaZ. Check out the source code or report issues on our GitHub Repository.