Signing
Algorithm
Secret Key
Claims
Subject (sub)
Issuer (iss)
Audience (aud)
Issued At (iat)
Expiry (exp)
Custom Claims
Generated JWT
Token will appear here after generation…
About JWT Generator
JWT Generator allows developers to create mock tokens for auth testing. Customize signatures and expire times locally without running OAuth servers.
How to Use JWT Generator
- Enter header configuration.
- Setup custom claims payload (e.g. user ID, role).
- Input signature secret key and select HS256/HS512.
- Generate and copy JWT.
Frequently Asked Questions
Is it safe to generate tokens online?
Yes, tokens are computed locally inside your browser's memory using crypto libraries. Your signing key is never sent to any servers.
Which signing algorithms are supported?
This generator supports HMAC-based algorithms: HS256, HS384, and HS512.
Can I set expiration dates?
Yes, you can specify custom payload claims like "exp" and "iat" using standard Epoch timestamps.