Result:

The Minecraft community generally adheres to a standard naming structure. Following this, should be renamed to: [Mod Name]-[Version]-[Minecraft Version].jar Example Transformation: Old: alliemodforge1122jar New: AllieMod-1.2.0-1.12.2.jar How to Correctly Rename and Organize the Mod

The .jar (Java Archive) format is the standard executable package for Java applications. Minecraft runs entirely on Java, meaning every legitimate mod file must end with this extension to be read by your mod loader.