Light Overlay

A simple mod to provide users with NEI-like light level overlay.

387.9K Downloads

fabricforgeneoforgeriftutility

Configure a Compatible Minecraft Server

About this Mod

A yellow cross means that mobs can spawn at night, a red cross means that mobs can spawn anytime.
A blue cross means that mobs can spawn if there is a spawner (1.18 only)

This mod provides users with a NEI-like light overlay.

This mod requires Rift, Forge or Fabric. (Fabric API, Cloth Config (Fabric) and Architectury are required for Fabric, Cloth Config (Forge) and Architectury are required for Forge)

Press F7 to toggle the light overlay, configurable through Controls Settings.

Config

Rift 1.13.2: Config Screen Not Available
Forge 1.13.x: Config Screen Not Available
Forge 1.14+: Mod List > Config
Fabric 1.14+: Mod Menu > Config

Available Versions

[Fabric 1.21.10] v13.0.0release

MC 1.21.10fabric

October 29, 2025

[NeoForge 1.21.10] v13.0.0release

MC 1.21.10neoforge

October 29, 2025

[NeoForge 1.21.6-8] v12.0.0release

MC 1.21.6, 1.21.7, 1.21.8neoforge

October 26, 2025

[Fabric 1.21.6-8] v12.0.0release

MC 1.21.6, 1.21.7, 1.21.8fabric

October 26, 2025

[Forge 1.20] v8.0.0release

MC 1.20forge

June 8, 2023

How to Install Light Overlay on Your Client

Install the Mod Loader Locally

Install fabric for your local Minecraft version.

Download the Matching File

Choose the Light Overlay file for fabric and Minecraft 1.21.10.

Install Mod

Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.

Compatibility

Mod Loaders

fabricforgeneoforgerift

Minecraft Versions

1.21.10, 1.21.8, 1.21.7 (+27 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Does Light Overlay need to be installed on the Minecraft server?

No. Modrinth marks Light Overlay as unsupported on the server side. Install it only in your local Minecraft mods folder. Your server can remain unchanged unless the mod page lists an additional dependency.

Which version and loader does Light Overlay require?

Use a file for fabric, forge, neoforge, rift and your exact Minecraft version. Supported versions include 1.21.10, 1.21.8, 1.21.7. Files for different loaders are not interchangeable.

Light Overlay is not working – what should I check?

First check the Minecraft version, loader version and required dependencies. Put the .jar file in your local .minecraft/mods folder and remove older duplicates. Because this mod is client-side, adding server RAM will not fix it.