Block HightlightFX

A simple visual mod that spices up your game with custom colorful block highlights and outlines!

18.0K Downloads

fabricdecorationgame-mechanicsutility

Rent Server with this Mod

Screenshots

About this Mod

A simple visual mod that spices up your game with custom colorful block highlights/outlines!

Features:

Change the color & opacity of the vanilla block outline
Highlight blocks with a custom color & opacity
Display the block outline/fill while not looking at a block
Display a full-sized block outline/fill even when looking at a smaller block

Join the discord for updates and to report bugs!

Available Versions

BlockHighlightFX-1.0.5+26.1release

MC 26.1, 26.1.1, 26.1.2fabric

April 4, 2026

BlockHighlightFX-1.0.5+1.21.10release

MC 1.21.10fabric

February 1, 2026

BlockHighlightFX-1.0.5+1.21.11release

MC 1.21.11fabric

February 1, 2026

BlockHighlightFX-1.0.4+1.21.11release

MC 1.21.11fabric

January 26, 2026

BlockHighlightFX-1.0.3+1.21.8release

MC 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8fabric

September 20, 2025

How to Install Block HightlightFX on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1.2).

Install Mod

Open the mod browser in the dashboard and search for "Block HightlightFX". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

26.1.2, 26.1.1, 26.1 (+9 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Block HightlightFX server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.

Is Block HightlightFX compatible with fabric?

Block HightlightFX officially supports fabric for Minecraft 26.1.2, 26.1.1, 26.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Block HightlightFX – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Block HightlightFX consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.