JWT Token Decoder & Inspector

Paste a JSON Web Token to inspect decoded header properties, payload JSON claims, and expiration timestamps safely inside your client browser.

Key Features

• Decodes Header and Payload JSON structures instantly
• Automatic Expiration Check (Valid vs Expired status)
• 100% Private—your JWT tokens are NEVER sent over the network
• Copy decoded JSON payload with one click

Frequently Asked Questions

Is the JWT Decoder & Inspector free to use?

Yes, DODDY's JWT Decoder & Inspector is 100% free with no account registration, subscriptions, watermarks, or usage limits.

Is it safe to paste sensitive JWTs here?

Yes! DODDY decodes JWTs purely using browser JavaScript (`atob`). No requests are sent to any server.

What devices and platforms support the JWT Decoder & Inspector?

The tool works on any modern browser across Windows, macOS, Linux, iOS, Android, and ChromeOS without installing additional plugins or extensions.