Complete JWT Documentation Guide
Learn in-depth about JSON Web Token (JWT) mechanisms, best practices, security considerations, and practical applications. From basic concepts to advanced implementation, here's everything you need to know.
🚀 Quick Start - Choose Your Tool
What is JWT?
Core Features
Compact
Can be transmitted via URL, POST parameters, or HTTP headers with fast transmission speed
Self-contained
Payload contains user information, avoiding multiple database queries
Secure
Uses secret keys or public/private key pairs for signing, ensuring claim integrity
Common Use Cases
Authentication
The most common JWT use case. After user login, each subsequent request includes the JWT, and the server validates the token to confirm user identity.
Validate JWT TokenInformation Exchange
JWT is a good way to securely transmit information between parties, as they can be signed to ensure sender identity and content integrity.
Generate JWT TokenAuthorization Access
After user login, each request includes the JWT, allowing access to routes, services, and resources within the token's permission scope.
Generate Secure KeySecurity Testing
Through fuzzing and vulnerability scanning, ensure JWT implementation security and discover potential security risks and configuration issues.
Security Testing ToolImportant Notice
JWT token information is Base64 encoded, and anyone can decode and view the content. Therefore, never store sensitive information in JWTs (such as passwords, credit card numbers, etc.). JWT security relies on signature verification, not content encryption.
🖼️ JWT Workflow Diagrams
Understand JWT's working principles, security mechanisms, and best practices through intuitive diagrams