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JWT Decoder

Header
...
Payload
...
No signature verification

What is JWT Decoder?

JWT Decoder allows you to instantly see the contents of a JSON Web Token. It splits the token into its three parts (Header, Payload, Signature) and decodes the Base64Url strings so you can inspect claims and metadata without needing a secret key.

How to use JWT Decoder?

  1. 1Paste your full JWT (usually starts with 'eyJ...') into the input area.
  2. 2The tool will instantly parse and display the decoded JSON for the header and payload.
  3. 3Review the claims such as 'exp' (expiration), 'sub' (subject), and custom data.
  4. 4Note: This tool decodes the token but does NOT verify the signature.

Frequently Asked Questions

Can I verify the signature here?

No, signature verification requires your private/public key. For security reasons, we do not ask for or store your keys.

How do I read the expiration date?

The 'exp' field in the payload is a Unix timestamp. You can use our Timestamp Converter tool to see the actual date and time.

Is it safe to paste my JWT here?

Yes, the decoding happens entirely in your browser. Your token is never sent to our server.