JWT Decoder

Decode and validate JSON Web Tokens

JWT Token

Decoded JWT information will appear here

Enter a JWT token and click "Decode JWT" to see the header, payload, and signature
About JWT Tokens
JWT Structure
  • Header - Algorithm and token type
  • Payload - Claims and user data
  • Signature - Verification signature
Common Claims
  • sub - Subject (user ID)
  • exp - Expiration time
  • iat - Issued at time
  • nbf - Not before time
Security Notes
Important: This tool only decodes JWT tokens. It does not verify signatures as that requires the secret key. Never share your secret keys or private tokens.