JarPeek

JarPeek is an online JAR file viewer that runs entirely in your browser using TeaVM-compiled Vineflower decompiler. Browse JAR contents, decompile .class files, inspect bytecode and constant pools, and edit configuration files (YAML, properties, JSON) without uploading anything to a server or installing software.

Designed for developers without a local JDK environment. Supports inspecting class structure, exporting modified JARs, and works on mobile devices for on-the-go file inspection.