JWT Tools

JWT Token Generator

JWT Token Generator signs a JWT from your header, payload, and secret using HS256 (HMAC-SHA-256) entirely in your browser. Free and private.

Client-sideRuns entirely in your browser — your data never leaves your device.

JWT Token Generator is a free JWT Tools utility that runs entirely in your browser — nothing you enter is uploaded.

Header (JSON)
Payload (JSON)
Signed JWT (HS256)

How to use JWT Token Generator

  1. Type or paste your JWT into JWT Token Generator's input area.
  2. Tune the HMAC secret control before you generate.
  3. Click Sign JWT to generate it instantly in your browser.
  4. When it looks right, Copy to save it.

About this tool

Everything JWT Token Generator does happens on your own device. JWT Token Generator splits and base64url-decodes a JWT locally so you can inspect its claims.

Signature verification that needs a secret should be done in a trusted environment; JWT Token Generator focuses on decoding. No data is sent anywhere, so it stays fast and private by default.

Frequently asked questions

What does JWT Token Generator do?

JWT Token Generator runs entirely on your device: add your input using the HMAC secret control, and it generates it locally in real time.

Do I need an account for JWT Token Generator?

No — JWT Token Generator needs no account, sign-up or installation.

Is my input private in JWT Token Generator?

Yes — your input never leaves your device; JWT Token Generator does all the work in your browser.

Does JWT Token Generator verify the JWT signature?

JWT Token Generator decodes the token locally so you can inspect its header and payload; verification needs the matching key.

Does JWT Token Generator work offline?

Once the page has loaded, JWT Token Generator keeps working with no network connection.

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