JWT Generator
Create HS256, HS384, HS512, or RS256 JSON Web Tokens in your browser. Secrets and private keys never leave the page.
Pick an algorithm, enter a secret or private key and your claims, and click Generate. Signing happens locally.
What this JWT generator does
Create signed JSON Web Tokens locally with HMAC algorithms or an RSA private key. No secret, payload, or key is uploaded.
Security note
This tool is for development and debugging. Never paste production secrets or private keys into a shared computer or untrusted page.
Frequently asked questions
How do I create a signed JWT?
Choose an algorithm, enter the secret or private key, set your claims, and click Generate. The signed token is produced in your browser.
Which algorithms are supported?
HS256, HS384, HS512, and RS256.
Is my secret or private key uploaded?
No. Signing happens locally — the secret or private key never leaves the page.
Does JWT Generator upload my data?
No. JWT Generator runs entirely in your browser — your input never leaves this page.
Is JWT Generator free to use?
Yes. JWT Generator is completely free, with no account and nothing to sign up for.