How to Decompile a Minecraft Mod JAR File

Decompile any Minecraft mod JAR to readable Java source in minutes — using a free online tool, no local Java installation needed.

Why Decompile a Minecraft Mod?

Method 1: Decompile the Full Mod JAR (Easiest)

Method 2: Decompile a Single Class (Faster)

What the Decompiled Output Looks Like

Limitations

After Decompilation: Editing the Mod

FAQ