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JWT Generator

Generate JSON Web Tokens for testing. Select algorithm (HS256, HS384, HS512), add payload claims, enter a test secret, and get a signed JWT. Not for production use.

Used 41.5K times today

⚠️ NOT for production use. This tool generates JWTs for testing and learning only. Never hardcode secrets in client-side code for real applications.

How to Use JWT Generator

  1. 1

    Select algorithm and add claims

    Choose HS256, HS384, or HS512 and add payload claims as key-value pairs.

  2. 2

    Enter a test secret

    Provide a signing secret. Use a strong random string for testing.

  3. 3

    Copy the generated JWT

    Click Generate and copy the signed JWT for testing your application.

Frequently Asked Questions

Can I use this in production?
No. This tool is for testing and learning only. Production JWTs should be generated server-side with securely stored secrets.
What algorithms are supported?
The tool supports HMAC-based algorithms: HS256, HS384, and HS512.

Embed This Tool

Add this tool to your website for free. Just copy and paste the code below:

<iframe src="https://utilko.com/embed/jwt-generator/" width="100%" height="500" frameborder="0" title="JWT Generator"></iframe>

About JWT Generator

The JWT Generator on Utilko lets developers create signed JSON Web Tokens for API testing and development. Select your algorithm, add claims, enter a test secret, and get a valid JWT — all in the browser. Not for production use.

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