JWT Decoder
Paste a JWT token to decode and inspect its header, payload, and expiration status.
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What is a JWT?
A JSON Web Token (JWT) is an open standard (RFC 7519) for securely transmitting information between parties as a JSON object. JWTs are commonly used for authentication and information exchange in modern web applications.
JWT Structure
A JWT consists of three parts separated by dots: header.payload.signature. The header typically contains the signing algorithm. The payload contains the claims (user data). The signature verifies the token's integrity.
Common JWT Claims
iss— Issuer of the tokensub— Subject (typically user ID)exp— Expiration timeiat— Issued at timeaud— Intended audience