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Debugging Auth Tokens
JSON Web Tokens (JWT) are the standard for modern authentication. However, they are just Base64Url encoded strings. Our **JWT Decoder** helps you inspect the contents—like `sub`, `iat`, `exp`—to understand why a user might be getting a 401 Unauthorized error.
Frequently Asked Questions
Yes. Every calculation happens right here in your browser using JavaScript. We never transmit your tokens or secrets to any external server.
Yes, if you assume the algorithm (e.g. HS256) and provide the secret key, we can verify if the signature matches the payload.
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