Minecraft Mod Decompiler — View & Edit .class Files in Any Mod JAR

Decompile a Minecraft mod in your browser: turn a mod JAR's compiled .class files into readable Java, then edit values or logic — no local setup needed.

What Is a .class File in a Minecraft Mod?

Step-by-Step: View and Decompile a .class File

Decompile a Whole Minecraft Mod at Once

Limitations of Class File Editing

Minecraft Class File Editor: What to Use

FAQ