JWT Encoder (HS256)
Create a signed JSON Web Token from a JSON payload and secret using HS256, HS384 or HS512.
100% free No signup Private & offline-ready Works in your browser
About the JWT Encoder (HS256)
Generate JWTs for testing APIs and authentication flows. Write a JSON payload, choose an HMAC algorithm and secret, and get a signed token with automatic iat and optional exp claims. Signing happens with the browser's Web Crypto API, so your secret stays on your device.
Frequently asked questions
Is the JWT Encoder (HS256) free?
Yes. The JWT Encoder (HS256) on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.
Are my files or data uploaded to a server?
No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.
Does it work on mobile?
Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.