JWT Decoder — Decode & Inspect JWT Tokens Online

Decode JWT Tokens Instantly

Inspect the header, payload, and claims of any JWT token — essential for API debugging.

How to Use

Open the JWT Decoder tool

Paste your JWT token

See decoded header and payload

Check expiration status and claims

What You'll See

• Header — algorithm and token type
• Payload — user data, roles, expiration
• Expiration status — is the token still valid?

FAQ

Does this validate the signature?

No — signature validation requires the secret key, which should never be shared client-side.

Is it safe to paste my JWT here?

Yes — everything processes in your browser. Your token is never sent to any server.

What about expired tokens?

The tool shows the expiration timestamp and whether the token is currently expired.