User:JEC6789/Downgrading

items-opaque.png was a texture atlas found inside minecraft.apk that was used to load the game's item textures.

Format
items.png is a fixed-width 256×256-pixel file that is split into different 16×16 squares which correspond to the texture of each item found in-game. Like with terrain-atlas.tga and particles.png, unused sections of the texture are completely transparent, unlike with the paintings sheet where such regions are colored magenta.