Can I use RSA or ECDSA signing?

The browser-based tool supports HMAC (HS256/384/512) signing which covers most development and testing needs. For RSA or ECDSA signing, you would need to use a library or CLI tool with access to key pairs.

How do I verify the generated token?

You can paste the generated token into the JWT Decoder tool on this site to verify its structure. To verify the signature, enter the same secret used for signing.

JWT Token Generator in Your Browser

Create signed JWT tokens without setting up a backend or using CLI tools. This browser-based generator lets you define custom claims, set expiration times and sign tokens locally, keeping your secrets completely private.

Open JWT Generator

How to Generate a JWT

Define the header (algorithm and token type)
Enter your payload claims (sub, name, role, etc.)
Set expiration and issued-at timestamps
Enter your signing secret and click Generate
Copy the signed JWT or decode it to verify

Common Use Cases

Generating tokens for Postman or Insomnia API testing
Creating mock tokens for frontend authentication flows
Testing token validation logic with various claim combinations
Learning JWT structure by generating and decoding tokens

Frequently Asked Questions

Can I use RSA or ECDSA signing?: The browser-based tool supports HMAC (HS256/384/512) signing which covers most development and testing needs. For RSA or ECDSA signing, you would need to use a library or CLI tool with access to key pairs.
How do I verify the generated token?: You can paste the generated token into the JWT Decoder tool on this site to verify its structure. To verify the signature, enter the same secret used for signing.