About JWT Generator
Create custom JSON Web Tokens (JWT) securely in your browser. Configure algorithms, edit headers and payloads in real-time, sign with HMAC secrets, and copy the full token or individual segments instantly.
Features
- Generate JWT header and payload dynamically
- Sign tokens locally using HMAC algorithms
- Quick add claims and copy token segments
Frequently Asked Questions
Is my secret key safe?
Yes! All signature generation happens locally in your browser using the Web Crypto API. No data or secret keys are ever sent to any server.
What algorithms are supported?
We support HS256, HS384, and HS512 using HMAC. Other asymmetric algorithms like RS256 can be mocked to generate token structures.