Toolkit.
Tool · Developer

JWT Encoder

Create HMAC-signed JWTs for dev and QA environments.

Interactive
The jwt encoder workspace is being lifted from the original build.

The same logic you already rely on, dressed in the new editorial layout. Until it lands here, the notes below cover what the tool does and when it earns its keep.

Provide a header, payload, and secret to generate tokens using HS256/384/512 algorithms. Great for testing protected endpoints without writing scripts.

Flexible payloads

Start with blank JSON, add claims, and the encoder keeps all values synchronized with your chosen algorithm.

Copy-ready output

Once generated, copy the token to use in Postman, curl, or automated tests.

When it earns its keep

  • Mock authenticated requests during local development
  • Issue temporary tokens for QA testing
  • Demonstrate JWT usage in documentation

Questions people ask

Is my secret stored?

No. Signing happens locally in your browser via the Web Crypto API.

Which algorithms do you support?

Currently HS256, HS384, and HS512.