CurseForge · Minecraft mod
LightLevel
LightLevel adds a toggleable overlay that displays information about the the light level reaching blocks with a solid top in a 16-block radius.
Quick answer
Which LightLevel release should I use?
lightlevel-1.20.4-5.0.0.jar targets 1.20.4 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is LightLevel required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does lightlevel-1.20.4-5.0.0.jar need?
lightlevel-1.20.4-5.0.0.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add LightLevel without breaking your instance.
Built for lightlevel-1.20.4-5.0.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use lightlevel-1.20.4-5.0.0.jar. It targets 1.20.4 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside lightlevel-1.20.4-5.0.0.jar. It opens that exact file at the source.
About this project
What does LightLevel add?
LightLevel
LightLevel adds a toggleable (default: F9) overlay that displays information about the the light level reaching blocks with a solid top in a 16-block radius. LightLevel has two modes.
Requires Fabric API!
Normal mode
Normal mode displays the the block light level reaching the block. The color represents the possibility of hostile mobs spawning there:
- White: A mob cannot spawn.
- Yellow: A mob can spawn during the night.
- Red: A mob can always spawn.
LightLevel makes no attempt to determine if any condition other than light level is met for the block to be suitable for spawning mobs.

Extended mode
Extended mode shares the same color scheme as Normal mode, however, the information it displays is different. Each block displays two numbers, the block light (denoted by the square symbol), and the sky light (denoted by the sun symbol).
Extended mode is active when the debug overlay (F3) is shown.

Modpack usage
Use this mod or the code however you want (within the license).
Project description from CurseForge.
Pick your setup
LightLevel by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.19.2
1 loader build1.19.1
1 loader build1.19
1 loader build1.18.1
1 loader build1.18-Snapshot
1 loader build1.18
1 loader build1.17.1
1 loader build1.17-Snapshot
1 loader build1.17
1 loader build1.16.5
1 loader build1.16.4
1 loader buildShowing the newest 12 of 19 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
LightLevel versions and loaders
lightlevel-1.20.4-5.0.0.jar
15 Dec 2023
lightlevel-1.19-4.0.0.jar
6 Nov 2022
lightlevel-1.17-1.18-3.0.0.jar
20 Jan 2022
lightlevel-1.16.2-2.0.0.jar
28 Aug 2020
lightlevel-1.15.2-1.1.0.jar
25 Jan 2020
lightlevel-1.15.1-1.0.0.jar
25 Jan 2020
Looking for an older file? The official CurseForge project page is in Resources.