Then locate d8.jar at: android_sdk/build-tools/30.0.3/lib/d8.jar

java -cp d8.jar com.android.tools.r8.D8 --output [output_path] [input_jar_or_class] Use code with caution. Copied to clipboard Common Flags: : Optimizes for production (removes debug info). --min-api [number] : Targets a specific Android version (e.g., --min-api 21 --lib [path/to/android.jar] : Required if using Java 8 features like lambdas. ⚠️ Pro-Tips for Success The "r8lib.jar" Trick:

Once installed, d8.jar is located inside your Android SDK directory:

<PropertyGroup> <AndroidLinkTool>r8</AndroidLinkTool> </PropertyGroup>

This guide provides a comprehensive overview of how to securely download, build, and use d8.jar for your Android development workflows. What is D8?

--release : Compiles without debug information for production. D8 vs. DX: Why Switch? ~30% faster Size Larger DEX Smaller DEX Java 8 Support Native Support Status Deprecated Actively Maintained Frequently Asked Questions

Conversion exceptions when using tools like JEB Decompiler that expect D8

java -cp d8.jar com.android.tools.r8.D8 --output /path/to/output/dir /path/to/input.class Use code with caution. Compiling a JAR File into DEX