Invalid
Examples:
JWT Token
3 parts • 155 characters
About JWT
What is JWT?
JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. It's commonly used for authentication and authorization in web applications.
JWT Structure
- • Header: Algorithm and token type
- • Payload: Claims and data
- • Signature: Verification signature
Common Claims
- • sub: Subject (user ID)
- • iat: Issued at (timestamp)
- • exp: Expiration time
- • aud: Audience
- • iss: Issuer
Security Note
This tool only decodes JWT tokens. Signature verification requires the secret key and should be done server-side.
Instant Decoding
Real-time JWT token analysis as you type
Secure & Private
All processing happens in your browser
Detailed Analysis
Header, payload, and expiration analysis