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JWT Token
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Decoded Payload
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About JWT Decoder
Decode and analyze JWT tokens to inspect claims, expiration dates, and token structure. Essential for API authentication debugging and development.
Key Features (5)
- JWT token decoding
- Header and payload inspection
- Expiration time analysis
- Signature verification info
- Claims validation
Common Use Cases (5)
- API authentication debugging
- Token expiration checking
- Claims inspection and validation
- Security testing and analysis
- OAuth and SSO implementation
Frequently Asked Questions (3)
Q: What information can I see in a JWT?
A: JWTs contain header (algorithm, type), payload (claims like user ID, expiration), and signature. This tool shows all readable parts of the token.
Q: Is it safe to decode JWTs online?
A: Our tool decodes tokens locally in your browser - no data is sent to servers. However, never paste production tokens containing sensitive data into any online tool.
Q: Why can't I see the signature content?
A: The signature is encrypted and used for verification only. You can see signature algorithm info, but the actual signature content is not human-readable.
Related Topics
jwttokendecoderauthenticationapioauth