It looks like you're looking for a Fullbright texture pack specifically for Minecraft Java Edition 1.12.2.

Features:

A Fullbright pack simply removes the "darkness overlay" from the game. Normally, light levels below 7 render blocks in shadow. A Fullbright pack forces the game to render every block as if it were in direct sunlight (Light level 15).

Is it Cheating?

Before you install, consider the context.

The "Updated" Factor: What Changed in 2024-2025?

The original Fullbright texture packs for 1.12.2 were created in 2017-2018. Many of those downloads are dead links or broken ZIP files. An updated version for 2024-2025 addresses three things:

Simple Fullbright: A "universal" pack that works across nearly all versions, including 1.12.2, without requiring Optifine. How to Install on Minecraft 1.12.2

❌ Server Rules: Be cautious; some competitive or "Hardcore" servers consider Fullbright a "cheat" or an unfair advantage. How to Use It Download the .zip file for the 1.12.2 version.