i-net-software/JWebAssembly

Health v2 · maintenance only

Adoption not part of the score

1052 stars · 61 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

JWebAssembly is a Java bytecode to WebAssembly compiler that takes Java class files as input and generates .wasm binary or .wat text output. It enables running Java (and other JVM languages like Kotlin, Scala, Clojure) natively in the browser via a 1:1 conversion rather than porting a full VM.

Use cases

• compile java code to webassembly
• run java in the browser with wasm
• convert kotlin or scala to webassembly
• generate .wat text format from java class files
• compile jvm bytecode to wasm binary

When to choose

• you want to run Java or JVM-language code natively in the browser without a full VM
• you need compact wasm output similar in size to the original class files
• you want a Gradle-integrated Java-to-WASM build pipeline

When to avoid

• you need full Java runtime features like GC, reflection, or the standard library
• you want a mature production-ready toolchain rather than a milestone release candidate
• you target server-side execution where the JVM itself is available

Facets

library · maturity active

compiler wasm parser compilers web-development programming-languages jvm browser wasm cli java-bytecode webassembly wasm-compiler gradle-plugin jvm-languages

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markdown · JSON · MCP: product_card(name="i-net-software/JWebAssembly")