tag:github.com,2008:https://github.com/javaobfuscator/Java-Obfuscator/releases 2026-06-18T20:53:00Z tag:github.com,2008:Repository/1273742075/1.0.0 2026-06-18T21:01:40Z <h2>HardObfuscator — Free Java Obfuscator</h2> <p>Open-source <strong>Java bytecode obfuscator</strong> with GUI. Protect your JAR files with class/method rename, string encryption, control flow obfuscation, and more.</p> <h3>Download</h3> <table> <thead> <tr> <th>File</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td><code>hardobfuscator.jar</code></td> <td>Ready-to-run fat JAR (GUI + CLI)</td> </tr> </tbody> </table> <p><strong>Requirements:</strong> Java 17+</p> <h3>Quick Start</h3> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="java -jar hardobfuscator.jar"><pre>java -jar hardobfuscator.jar</pre></div> <p>🖥️ GUI — Dark-themed dashboard (FlatLaf), drag &amp; drop JAR<br> ⌨️ CLI — Automation with JSON config<br> 🔒 15+ transformers — Rename, string encryption, control flow, debug removal<br> 📦 Package scope — Obfuscate only your code, keep libraries intact<br> 🔌 Plugin API — Custom transformers<br> ⚡ Parallel pipeline — Fast processing for large JARs</p> javaobfuscator