JWT Generator
Create signed JWT tokens online using HS256, HS384, or HS512 via the Web Crypto API. Free JWT generator for testing auth flows — no server calls.
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Frequently asked questions
What is JWT Generator?+
Generate signed JWT tokens for testing — entirely in your browser using the Web Crypto API.
How do I use JWT Generator?+
Choose algorithm: HS256, HS384, or HS512. Edit the payload JSON — add any claims you need (sub, exp, iat, etc.). Enter a secret key to sign the token. Output is a ready-to-use JWT — paste it into Postman, curl, or your app
Is JWT Generator free?+
Yes, JWT Generator is completely free. No account or sign-up required, and all processing happens in your browser — nothing is sent to a server.
Is my data safe when I use JWT Generator?+
Yes. JWT Generator runs entirely in your browser using JavaScript and Web APIs — your input is never uploaded, transmitted, or stored on any server.