JWT Decoder
Decode JSON Web Tokens to view Header and Payload content.
Tool Guide
What is JWT Decoder?
Decode JSON Web Tokens to view Header and Payload content.
How to use?
- Paste Token: Enter the long JWT string returned from login APIs.
- Deconstruct: Breaks it into Header (red), Payload (purple), and Signature (blue).
- View Payload: Read plaintext core info like User IDs, roles, and expiration dates.
Use Cases
Auth Debugging
Troubleshoot token expiration or permission errors by verifying the actual identity fields encoded inside.
Limits and data handling
- Results reflect the current input and test conditions and do not prove a service is always available. For JWT Decoder, pay special attention to: Paste Token: Enter the long JWT string returned from login APIs.
- Complex input, special syntax, or network rules can change the result. For JWT Decoder, pay special attention to: Paste Token: Enter the long JWT string returned from login APIs.
- Remove keys, tokens, and customer data before submitting. For JWT Decoder, pay special attention to: Paste Token: Enter the long JWT string returned from login APIs.
JWT Decoder uses only the information needed for the current action. Do not submit unrelated sensitive content.
Frequently asked questions
How do I use JWT Decoder for Auth Debugging?
Paste Token: Enter the long JWT string returned from login APIs. View Payload: Read plaintext core info like User IDs, roles, and expiration dates.
What is JWT Decoder useful for?
Troubleshoot token expiration or permission errors by verifying the actual identity fields encoded inside. Troubleshoot token expiration or permission errors by verifying the actual identity fields encoded inside.
What should I check before using JWT Decoder?
Results reflect the current input and test conditions and do not prove a service is always available.