File extensions
Minecraft has multiple custom file extensions used to launch the game in specific ways, import packs, or store data.
Java Edition
.mcmeta: Used to define metadata of a resource pack, data pack, or a texture..mca: Used to store region data of a world..mcr: Previously used to store region data of a world from Beta 1.3 to 1.1.
Bedrock Edition
These file extensions are essentially identical to .zip files and can be converted from or to such a file. However, most of these files allow to launch Minecraft or Minecraft Preview, which will automatically import the file in the dedicated directory.
.mcaddon: Contains other Minecraft packs to import simultaneously as part of an add-on..mceditoraddon: Used import an Editor add-on in Bedrock Editor..mcfunction: A function containing Minecraft commands. Must be placed inside a behavior pack..mcpack: Used to import a resource pack, behavior pack, or skin pack..mcperf[more information needed].mcproject: Used to import a project in Bedrock Editor..mcshortcut: Used to open Minecraft directly in a world or server with the Quick Play feature..mcstructure: Used to save a structure with structure blocks. Can be used inside a behavior pack..mctemplate: Used import a world template..mcworld: Used to import a world.
External links
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