JWT Decoder
Inspect tokens without sending them to a server.
No token detected
Paste a JWT above to decode its contents.
Understanding JWTs
Structure
A JWT consists of three parts separated by dots (.): the Header (algorithm info), the Payload (user data/claims), and the Signature (to verify authenticity).
Security Note
JWTs are encoded, not encrypted. This means anyone can read the payload (like this tool does). Never store sensitive info like passwords or social security numbers in a JWT payload.
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