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JWT Decoder
Decode and inspect JSON Web Tokens (JWT) instantly. View header, payload, signature, and expiration status.
Frequently Asked Questions
Is my JWT sent to a server?
No, JWT decoding happens entirely in your browser. Your token is never sent anywhere.
Can it verify signatures?
This tool only decodes JWTs. It does not verify signatures, as that requires the secret key.
Token Expired?
If the JWT has an exp claim and current time is past it, the tool shows the token as expired.
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