JWT Encoder/Decoder
Encode and decode JSON Web Tokens.
About JWT Authentication
JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed. It's a common method for handling authentication in modern web applications.
The Authentication Flow
The diagram below illustrates a typical JWT authentication flow using an external authorization server (like Auth0, Okta, or Firebase Auth).
User Login: The user initiates a login request from the client application.
Authentication: The client application redirects the user to an Authorization Server, which handles the actual authentication (e.g., username/password, social login).
Token Issuance: Upon successful authentication, the Authorization Server generates two tokens:- An ID Token, which contains information about the user (their identity).
- An Access Token, which grants the application permission to access specific resources (APIs) on behalf of the user.
Application Access: The client application receives these tokens and stores them securely. It sends the Access Token in the `Authorization` header of API requests to the backend server, which validates the token to grant access.