decompiler.cc · Java decompiler · 2026

Online Java and JAR decompiler

Drop a .jar or .class file and read reconstructed Java in the tab. Parsing stays in a web worker on your device.

JAR and CLASS

Open archives and single class files. Browse the tree, search strings, and switch between source and bytecode.

Kotlin-aware

When Kotlin metadata is present, the Java engine recovers more readable names and structure.