Free online tool

Decode JWT Online

Inspect JSON Web Tokens during development and debugging without sending token contents to a server.

Open JWT Decoder

Best for

  • Debug auth claims
  • Check token expiration
  • Inspect JWT headers and payloads

How it works

  1. Step 1: Paste a JWT
  2. Step 2: Review decoded header and payload
  3. Step 3: Check expiration and timestamps

Frequently asked questions

Does this verify JWT signatures?

No. Signature verification requires a secret or public key.

Is the token uploaded?

No, decoding happens locally in your browser.

Use the full tool

This landing page explains the workflow. The actual interactive tool is available at https://fixelium.com/dev/jwt-decoder.