NexoraStack Tools
JWT Encoder
Encode JWT tokens from custom header and payload JSON.
Tool Interface
Functional explanation
Builds JWT token segments from structured header and payload JSON inputs.
- Prototype auth claim schemas.
- Generate local test tokens for integration checks.
- Validate segment encoding before backend verification.
How to use
Build JWT tokens from custom header and payload JSON with support for none and HS256 algorithms.
- Choose algorithm and set secret for HS256.
- Paste header and payload JSON objects.
- Encode and copy token output.
Example
Input
Header={"alg":"HS256"}, Payload={"sub":"123"}Output
eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxMjMifQ.<signature>
Keep signing keys out of client logs and screenshots.
Common mistakes
- Using real production secrets in browser tools.
- Assuming encoded token is always acceptable to target backend.
Output interpretation tips
- Check exp and aud claims in decode step.
- Match algorithm and secret expectations across services.
Security and privacy notes
- Never publish signing material in client code or screenshots.
- Treat generated tokens as sensitive credentials.
FAQ
Can I generate unsigned JWT?
Yes, choose algorithm none to produce an unsigned token.