JWT Decoder

Decode the header and payload of any JWT token

Decode the header and payload of any JWT token

JWT token

This tool decodes the header and payload for inspection only. It never verifies the signature, so treat decoded claims as untrusted data.

Privacy: JWT Decoder runs completely in your browser. Your input never leaves your device.

JWT Decoder FAQ

Is JWT Decoder free to use?

Yes, this tool is completely free. There are no fees, subscriptions, or limits — open the page and use it as much as you like.

Does JWT Decoder upload my data?

No. JWT Decoder runs entirely in your browser on your own device. Your text and numbers never leave your computer.

Does JWT Decoder work on mobile?

Yes. The tool is fully responsive and works on Android, iPhone, tablets, laptops, and desktop computers.