How to Open and Decompile a WAR File

A WAR file is a ZIP-based Java web archive. Learn how to open it, browse WEB-INF, and decompile its classes online or with standard command-line tools.

What's Inside a WAR File

Option 1: Open a WAR Online (No Install)

Option 2: Extract a WAR on the Command Line

Option 3: Decompile the Whole WAR at Once

WAR vs JAR

Summary