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Optimized Fullbright

Fullbright mod that disables the lighting system to improve performance. Now toggleable with a keybind!

FabricNeoForgeForge
Loaders
FabricNeoForgeForge
Downloads on Modrinth
54.5K
Followers on Modrinth
26
versions
34
Updated
September 16, 2026Sep 16
Published
in 2026

At a glance

Runs on Fabric, NeoForge and Forge
For Minecraft 1.20–26.3
Client only — no need to install it on the server
Latest version — 2.0.0+26.2-fabric from September 16, 2026
Requires Craft Config Lib and Fabric API
License MIT — free
Where it's needed
In gamerequiredOn servernot needed

Install in the game only; not needed on the server

Game versions1.20–26.3

Optimized Fullbright

How does this mod differ from the others?

Instead of just changing minecraft's gamma value like many other fullbright mods, this mod also completely disables minecraft's lighting engine. This reduces the number of lighting calculations the game has to perform, improving performance since there's no reason to compute light levels when they’re always at the maximum.

Because of this, F3 will display every block’s light level as 15, indicating that the mod is working.

working example

Performance comparison

With a simulated lag machine designed to cause more light updates:

(LEFT) Fullbright Disabled : ~210 fps

‎(RIGHT) Fullbright Enabled : ~260fps

Alt textAlt text

Of course, in normal gameplay the performance gap will be smaller. However, it can provide noticeable improvements in areas with huge amount of block/light updates, e.g. large scale farms that use pistons.

Compatible mods:

  • Sodium
  • Bad Optimizations
  • ScalableLux

By default, fullbright is toggleable by using the key (G). It can be changed in the controls setting.

This mod is purely visual and does not affect any other game mechanics.

Dependencies (For versions >= 2.0.0)

Fabric Dependencies

Mod Menu is optional.

(Neo)Forge Dependencies

FAQ

How to install Optimized Fullbright?

Install Fabric for your Minecraft version, download Optimized Fullbright for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Optimized Fullbright support?

Optimized Fullbright has builds for Minecraft 1.20–26.3.

Is Optimized Fullbright needed on the server?

Client only — no need to install it on the server

License and source
MIT Licensefree to use and share with credit to the author
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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