JWT Decoder
Decode a JSON Web Token to read its header, payload and expiry time. Nothing is sent to a server.
100% free No signup Private & offline-ready Works in your browser
About the JWT Decoder
Inspect the claims inside a JWT, such as user ID, roles, issuer and expiry. Decoding does not verify the signature — it only reads the Base64URL-encoded parts. Because it runs locally, your tokens are never exposed.
Frequently asked questions
Is the JWT Decoder free?
Yes. The JWT Decoder on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.
Are my files or data uploaded to a server?
No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.
Does it work on mobile?
Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.