What Is a JWT Token?

If you’ve ever wondered how websites let you stay logged in without asking for your password every five minutes, the answer often lies in something called a JWT (JSON Web Token).

Think of a JWT as a digital passport — a secure little package of information that proves who you are and what you’re allowed to do, allowing you to move smoothly between different parts of an app or API.

How Does a JWT Work?

Imagine you walk into a theme park. At the entrance, you buy a ticket and get a wristband.