JWT Decoder
Decode and inspect JSON Web Tokens
Note:
This tool decodes JWT tokens client-side in your browser. It does not verify signatures or validate tokens. Never paste tokens containing sensitive data on untrusted websites.
Quick examples:
About JWT Tokens
JSON Web Tokens (JWT) are a compact, URL-safe means of representing claims between two parties. They consist of three parts: header, payload, and signature, separated by dots.
JWT Structure
- Header: Contains token type and signing algorithm
- Payload: Contains claims (user data, expiration, etc.)
- Signature: Verifies the token hasn't been tampered with
Common Claims
- iss: Issuer of the token
- sub: Subject (user ID)
- exp: Expiration time
- iat: Issued at time
- aud: Audience (intended recipient)
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