Developer
JWT Generator
Create HS256 JWTs with custom claims. Verify with JWT Decoder.
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Frequently Asked Questions
Quick answers to common questions
What algorithm is used?+
HS256 (HMAC-SHA256) symmetric signing only.
Is the secret stored?+
No. Secret is used locally to sign and never sent anywhere.
Can I verify the token?+
Yes. Paste into JWT Decoder with the same secret.
What claims are included?+
sub, name, iat (issued at), and exp (expiry) by default.
RS256 support?+
Not in this tool. RS256 requires private key signing.
Production use?+
For testing and learning. Use established libraries in production apps.
Expiry hours?+
Set 1–8760 hours (1 year max in UI).
Free?+
Yes.