JWT
JSON Web Token — a compact, URL-safe token format (header.payload.signature) used to transmit claims between parties, commonly for API authentication and s
Quick Answer
See our full JWT Glossary for related terms, or use the JWT Decoder to inspect tokens in practice.
What is JWT?
JSON Web Token — a compact, URL-safe token format (header.payload.signature) used to transmit claims between parties, commonly for API authentication and single sign-on.
See It in Practice
Paste any JWT into our JWT Decoder to see tokens in action. Use the JWT Debugger for detailed analysis.
Related
Browse the full JWT Glossary or explore JWT Basics.
JWT in JWT Authentication
Understanding JWT helps you read RFC 7519, debug tokens, and design secure authentication. JWTs combine header, payload claims, and a cryptographic signature.
Browse related resources: JWT Decoder, JWT Validator, JWT Basics, JWT Authentication, JWT Errors, Algorithms, Glossary, and Learning Path.