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JWT Generator

Create test JWT tokens with custom payload and secret using HS256.

Free online tool. No signup required. All processing runs in your browser.

About this tool

Enter a JSON payload and a secret key to generate a signed JWT token. Ideal for testing authentication flows in development environments.

What is JWT Generator?

A JSON Web Token (JWT) is a signed token composed of a header, payload, and signature. It is commonly used for authentication and authorization.

How to use JWT Generator

  1. Enter or edit the payload JSON.
  2. Provide a secret key.
  3. Generate and copy the JWT token.

Examples

Example input

{"sub":"user123","role":"admin"}

Example output

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...

FAQ

Is this suitable for production?
No. This tool is for testing only. Always generate tokens securely in your backend.
Which algorithm is used?
Typically HS256. Some advanced tools may support RS256 or other algorithms.
Are these tools free?
Yes. All tools on DevToolsHub are free to use.
Does the tool store my data?
No. Processing happens in your browser. We do not store or send your input to any server.
Can I use the output in production?
Yes. Use the result as you like; we do not claim any rights over the output.

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