JWT Decoder
Decode JWT tokens — inspect header, payload, and expiry in your browser.
Decoded entirely in your browser. Your token is never sent to any server.
FAQ
Is my JWT sent to a server?
No. Decoding happens entirely in your browser. Your token never leaves your device.
Does this verify the signature?
No. This tool decodes and displays claims only. Signature verification requires the secret or public key.
About JWT Decoder
Decode JWT tokens online for free. Inspect header, payload, expiration, and claims privately — no upload, no account.