Minecraft wiki entry for Resource_Pack, associated text: Each line in the .json file is in the standard json format of "identifier":"name" followed by a comma in case it is followed by another value in the next line. identifier is the name that the game looks for to determine the name for something, and as such it should not be changed. name is the name that is displayed. For example, stone in the default language file is "block.minecraft.stone":"Stone", with block.minecraft.stone being the identifier, and Stone being the displayed name. Blank lines are ignored. The file needs to be valid JSON syntax, meaning it starts with a {, has a comma after every key value pair except the last one, and ends with a }.