JWT Decoder

Free online JWT Decoder. No sign-up needed, and it runs in your browser.

Processed on your device

Decode a JWT header and payload locally. This does not verify the signature.

Never treat decoded JWT data as trusted. Signature verification requires the issuer's key and proper validation.

How to use

  1. Add your text or file.
  2. Adjust the options if needed.
  3. Copy or download the result.

Guides