JWT Decoder

Decode and validate JSON Web Tokens (JWT).

JWT Decoder

Decode and validate JSON Web Tokens

All decoding happens locally in your browser. Your token never leaves this device.

⚠️ Security Notice

This decoder only parses the JWT. It cannot verify the signature without your secret key.

Never decode JWT tokens containing sensitive information in production environments or share tokens with untrusted parties.

Standard JWT Claims Reference

iss

Issuer - Identifies the principal that issued the JWT

sub

Subject - Identifies the principal that is the subject of the JWT

aud

Audience - Identifies the recipients that the JWT is intended for

exp

Expiration Time - Identifies the expiration time on or after which the JWT MUST NOT be accepted

nbf

Not Before - Identifies the time before which the JWT MUST NOT be accepted

iat

Issued At - Identifies the time at which the JWT was issued

jti

JWT ID - Unique identifier for the JWT (prevent replay attacks)