JWT Encoder
Build unsigned JWTs (alg: none) for local testing.
JWT Encoder builds unsigned tokens with alg: none from a JSON payload. Use it only for local testing and demos — never for production authentication. Encoding happens entirely in your browser.
Frequently Asked Questions
Does my text leave the browser?
No. This tool runs entirely in your browser. Nothing is uploaded to our servers.
Why is the algorithm none?
This tool only creates unsigned tokens for testing. Signing with HMAC/RSA is intentionally not supported here.
Can I use these tokens in production?
No. Unsigned JWTs must not be accepted by production APIs. Use a proper auth library to sign tokens.