A web-based Java decompiler running entirely in your browser.
- Client-side only - No server required, privacy-focused
- High-quality output - CFR engine produces readable Java code
- Syntax highlighting - Clean code display with line numbers
- Completely free - No limits or registration required
- Visit the website
- Click "Choose File" to upload
.jar - View decompiled source code instantly
The tool runs entirely in your browser:
- Reads uploaded file via FileReader API
- Uses JSZip to extract JAR files
- Decompiles bytecode using CFR engine
- Displays syntax-highlighted Java code
- Analyze third-party libraries
- Learn Java bytecode structure
- Educational purposes
Note: Use responsibly and respect software licenses.