JWT Decoding

JSON Web Tokens (JWT) have become a cornerstone of modern web authentication. Whether you’re building a REST API, a single-page application, or a microservices architecture, understanding how to decode and validate JWTs is essential. In this article, we’ll compare the top tools available for decoding JWTs, focusing on the trade-offs between online services and local libraries. Understanding JWT Decoding Before diving into the tools, let’s briefly recap what JWT decoding entails. A JWT consists of three parts: a header, a payload, and a signature, all base64url encoded. Decoding a JWT involves: ...

JSON Web Tokens (JWTs) have become a cornerstone in modern web development, especially for authentication and authorization. As a developer, you may often need to decode these tokens to access their payload data without verifying their signature. The jwt-decode npm package simplifies this process, making it straightforward to work with JWTs in JavaScript applications. In this article, we’ll walk through how to use the jwt-decode package to decode JWT tokens. We’ll cover the basics of JWT structure, the installation process, practical implementation examples, and important considerations for working with JWTs securely. ...