Double-click jd-gui.exe to launch the application instantly without a formal installation process. For macOS Users Double-click the downloaded .dmg file. Drag the JD-GUI icon into your Applications folder.
When loading massive .jar files, JD-GUI may freeze or run out of memory. You can mitigate this by launching the universal .jar via the command line with allocated memory arguments: java -Xms512m -Xmx2048m -jar jd-gui-X.X.X.jar Corrupted Code Layouts
If you need to recover a lost project, JD-GUI allows you to save the decompiled files back into a structured source directory. Go to File > Save All Sources . The utility will package the reconstructed .java files into a single .zip archive. Common Troubleshooting Tips Error: "Java Runtime Environment not found"
Download the jd-gui-X.X.X.windows.zip archive or the executable .exe file. macOS: Download the jd-gui-X.X.X.dmg disk image.
For RedHat/Fedora distributions, run sudo rpm -i jd-gui-X.X.X.rpm .
Reconstructs readable Java source code from .class and .jar files.
Lets users browse the internal structure of compressed archives seamlessly. How to Download and Install JD-GUI Step 1: Check Prerequisites
