Dex to Java decompiler
Java Groovy Smali


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jadx - Dex to Java decompiler

Command line and GUI tools for produce Java source code from Android Dex and Apk files

jadx-gui screenshot


Building from source

git clone
cd jadx
./gradlew dist

(on Windows, use gradlew.bat instead of ./gradlew)

Scripts for run jadx will be placed in build/jadx/bin and also packed to build/jadx-<version>.zip


Run jadx on itself:

cd build/jadx/
bin/jadx -d out lib/jadx-core-*.jar
bin/jadx-gui lib/jadx-core-*.jar


jadx[-gui] [options] <input file> (.dex, .apk, .jar or .class)
 -d, --output-dir           - output directory
 -j, --threads-count        - processing threads count
 -r, --no-res               - do not decode resources
 -s, --no-src               - do not decompile source code
 -e, --export-gradle        - save as android gradle project
     --show-bad-code        - show inconsistent code (incorrectly decompiled)
     --no-replace-consts    - don't replace constant value with matching constant field
     --escape-unicode       - escape non latin characters in strings (with \u)
     --deobf                - activate deobfuscation
     --deobf-min            - min length of name
     --deobf-max            - max length of name
     --deobf-rewrite-cfg    - force to save deobfuscation map
     --deobf-use-sourcename - use source file name as class name alias
     --cfg                  - save methods control flow graph to dot file
     --raw-cfg              - save methods control flow graph (use raw instructions)
 -f, --fallback             - make simple dump (using goto instead of 'if', 'for', etc)
 -v, --verbose              - verbose output
 -h, --help                 - print this help
 jadx -d out classes.dex


Out of memory error:
  • Reduce processing threads count (-j option)
  • Increase maximum java heap size:
    • command line (example for linux): JAVA_OPTS="-Xmx4G" jadx -j 1 some.apk
    • edit 'jadx' script (jadx.bat on Windows) and setup bigger heap size: DEFAULT_JVM_OPTS="-Xmx2500M"


To support this project you can:

  • Post thoughts about new features/optimizations that important to you
  • Submit bug using one of following patterns:
    • Java code examples which decompiles incorrectly
    • Error log and link to public available apk file or app page on Google play

And any other comments will be very helpfull, because at current stage of development it is very time consuming to find new bugs, design and implement new features. Also I need to prioritize these task for complete most important at first.

Licensed under the Apache 2.0 License

Copyright 2016 by Skylot