JWT
DECODER
Decode and validate JSON Web Tokens (JWT) instantly. View header, payload, and signature components for authentication and authorization tokens.
JWT tokens have 3 parts: header.payload.signature (separated by dots)
🔐 AUTHENTICATION
JWT tokens are widely used for secure authentication and authorization in web applications.
📊 TOKEN ANALYSIS
Decode and inspect JWT tokens to understand their structure and claims without verification.
SECURITY WARNING
• This tool only decodes JWT tokens - it does not verify signatures
• Never paste sensitive or production JWT tokens into online tools
• All processing happens in your browser for privacy
• Always verify JWT signatures on the server side