File Name- Fullbright-mod-fabric-1.21.4.jar [patched] -

On servers without rules, anything client-side is generally permitted. Fullbright is considered a quality-of-life improvement.

Instead of rendering dark areas as pitch-black (light level 0-3), the Fullbright mod forces the game to render all areas as if they have a light level of 15—the maximum. This is not a simple gamma adjustment (like editing the options.txt file to increase brightness, which Mojang has limited in recent updates). This is a shader and lighting engine override. File name- Fullbright-Mod-Fabric-1.21.4.jar

Disclaimer: Mods are unofficial and not endorsed by Mojang Studios. Always back up your world before installing new modifications. On servers without rules, anything client-side is generally