All Tools VerseJWT Generator
Generate a signed HS256 JSON Web Token from a payload and secret, created in your browser so the secret stays local.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Create and sign a JSON Web Token in your browser. Enter a payload and a secret, choose the HMAC algorithm, and get a signed JWT. Signing uses the built-in Web Crypto API and your secret never leaves the page. Use HMAC tokens for testing and learning, not for production secrets in shared environments.
How to Use JWT Generator
- Enter the payload. Add the claims you want as a JSON object.
- Add your secret. Enter the shared secret used to sign the token.
- Generate the token. Select the button to build and sign the JWT.
- Copy the token. Use the copy button to grab the signed token.
Frequently Asked Questions
What signing method is used?
The token is signed with HS256, a symmetric method that uses a shared secret for both signing and verifying.
Where should I keep the secret?
On your server only. Anyone with the secret can mint valid tokens, so it must never be shipped to the browser in production.
Is the payload encrypted?
No. The payload is encoded and readable by anyone. Do not put sensitive data in a token.
Is anything sent to a server?
No. This tool runs entirely in your browser, so the values you enter, including any secrets, never leave your device.
Is it free?
Yes. Every tool here is free to use with no sign up.
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