LightLevel
The LightLevel mod provides a convenient toggleable overlay panel (default activation key: F9) that displays information about the light level for blocks with solid top surfaces within a 16-block radius. Two operating modes are available.
Requires Fabric API!
Main Mode
In standard mode, the block light level reaching each block is displayed. Color coding indicates the probability of hostile mobs spawning:
- White: Mobs cannot spawn
- Yellow: Mobs can spawn during nighttime
- Red: Mobs can spawn at any time
It's important to note that LightLevel only considers light levels and does not check other conditions necessary for mob spawning.

Extended Mode
Extended mode uses the same color scheme but displays more detailed information. Each block shows two numbers: block light level (denoted by a square symbol) and sky light level (denoted by a sun symbol).
This mode automatically activates when the debug panel is displayed (key F3).

Modpack Usage
You can freely use this mod or its code in accordance with the license terms.