How to Open a JAR File (Windows, Mac & Linux)

Learn how to open JAR files on Windows, Mac, and Linux. Step-by-step guide with tools and online options — no installation required.

Option 1: Open a JAR File Online (No Install Needed)

Option 2: Run a JAR File (Execute It)

Option 3: Browse JAR Contents with an Archiver

Option 4: Open a JAR in an IDE (IntelliJ, Eclipse)

Option 5: Decompile a JAR to Read the Java Source

Troubleshooting: Common Problems

Summary