EasyFilesConverter

JWT generator / signer

Create signed JWTs with HS256, HS384 or HS512 from a JSON payload, with automatic iat and exp claims - for testing APIs.

Algorithm

Add "iat" (now)

Expires in (minutes, 0 = never)

Free · No sign-up · Your files are processed on your device and never uploaded

How to use JWT generator / signer

  1. Paste or type…
    1

    Paste or type

    Put your content in the box - or try the example.

  2. Result appears instantly
    2

    Watch the result

    The result updates as you type - choose options above if needed.

  3. TXTCopy / Download
    3

    Download the result

    Ready in seconds. Your file never left your device.

Features

  • HS256/384/512 via Web Crypto.
  • Adds iat and exp for you.
  • Decode it with the JWT decoder.

Free and private

Everything runs in your browser. Nothing you paste is uploaded, logged or stored.

Questions

Should I use production secrets?

No - use test secrets only.

Is it free?

Yes - free and unlimited, with no sign-up and no watermark.

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