How to Decode JWT Tokens from the Command Line

How to Decode JWT Tokens from the Command Line

Decoding JWT tokens can be a crucial part of debugging and understanding the authentication and authorization processes in your applications. Whether you’re working on a microservices architecture or a single-page application, being able to quickly inspect JWT tokens can save you a lot of time. In this post, I’ll walk you through how to decode JWT tokens from the command line using tools like base64 and jq. Clone the companion repo: All scripts from this guide (plus a Python validator with expiry checking and JWKS support) are ready to use at IAMDevBox/jwt-decode-tools. Clone, chmod +x *.sh, and start decoding. ...

Dec 19, 2025 · 8 min · 1642 words · IAMDevBox