JWT Generator – Create and Sign JSON Web Tokens
Generate signed JWTs for API testing. Supports HS256/RS256 with custom claims and zero token storage.
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JWT Generator – Create Signed JSON Web Tokens (HS256 & RS256)
Generate secure JSON Web Tokens (JWT) instantly using HS256 shared secrets or RS256 RSA private keys. Add custom claims, set expiration time, and create tokens for API testing, authentication flows, and debugging.
How to Generate a JWT
- Select the signing algorithm (HS256 or RS256)
- Enter a secret key (HS256) or RSA private key (RS256)
- Choose the expiration date and time
- Add custom claims in JSON format
- Click Generate JWT
You can copy or download the generated token for use in your applications.
Example Claims
{
"sub": "user_123",
"role": "user",
"iss": "toolgk.com"
}
Security Note:
Do not use real production secrets or private keys in shared environments.
Always keep signing keys secure and rotate them regularly.
Do not use real production secrets or private keys in shared environments.
Always keep signing keys secure and rotate them regularly.
When to Use a JWT Generator
- test authentication APIs
- simulate login sessions
- validate backend JWT handling
- debug authorization issues
- create tokens for development environments
New to JWT? Use our JWT Decoder to inspect and verify tokens. Open JWT Decoder