JWT Tools

JWT Decoder

Decode and inspect JWT tokens with header, payload, and signature analysis

JWT Input

Paste a JWT on the left to see the decoded header, payload, and signature.

About JWT Decoding

JSON Web Tokens (JWT) are an open standard (RFC 7519) for securely transmitting information between parties as a JSON object. A JWT consists of three parts:

  • Header: Contains metadata about the token (like the signing algorithm)
  • Payload: Contains the actual data (claims)
  • Signature: Verifies the token has not been tampered with
Common Use Cases
  • Authentication and authorization
  • Information exchange
  • API access tokens
  • Single sign-on (SSO)