Custom Block Outline

Custom Block Outline

Custom Block Outline A simple yet highly useful client-side mod that replaces Minecraft's default, boring black block selection outline with a vibrant, fully customizable colored highlight!

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Screenshots

Custom Block Outline Screenshot 1
Custom Block Outline Screenshot 2
Custom Block Outline Screenshot 3

About this Mod

Custom Block Outline

A simple yet highly useful client-side mod that replaces Minecraft's default, boring black block selection outline with a vibrant, fully customizable colored highlight!

Now you can perfectly see which block you are targeting, even in the deepest, darkest caves or while building complex structures.

🌟 Features:

  • Color Selection on the Fly: Toggle between Cyan (Blue), Red, Green, or default Black directly in-game.
  • Thickness Adjustment: Make the outline ultra-thin or thick and bold for maximum visibility.
  • No Restarts Needed: All changes are applied instantly without reloading the world or restarting the game.

🎮 How to Use:

  1. Look at any block in the world.
  2. Press the K key on your keyboard to open the configuration menu.
  3. Select your preferred color or adjust the line thickness using the +0.5 / -0.5 buttons.
  4. Click Done to save and return to the game.

📌 Requirements:

  • Minecraft Version: 1.20.1
  • Mod Loader: Forge
  • This is a Client-Side mod. You can safely use it on multiplayer servers without needing it installed on the server side.

Available Versions

Custom Block Outline 1.0.0release
MC 1.20.1forge
June 4, 2026

How to Install Custom Block Outline on Your Server

1

Order Server

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

2

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).

3

Install Mod

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

Compatibility

Mod Loaders

forge

Minecraft Versions

1.20.1

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Custom Block Outline server crashes on startup – what to do?

Most common cause: wrong forge 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 (1.20.1). You can switch loaders with one click in the panel.

Is Custom Block Outline compatible with forge?

Custom Block Outline officially supports forge for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Custom Block Outline – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Custom Block Outline 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.

Rent Modded Server

Install Custom Block Outline with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
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1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Unsupported

Supported Versions

1.20.1