JWT Decoder.
Decode JWT header and payload instantly. See all claims including expiry. No token is sent to any server.
Ad slot: horizontal
How to use
Paste a JWT token into the input field.
The header and payload are decoded and displayed instantly.
Click Copy on either section to copy the JSON.
Frequently Asked Questions
Is my token sent anywhere?
No. Decoding happens entirely in your browser using JavaScript. Your token never leaves your device.
Does this verify the signature?
No. JWT verification requires the secret key or public key. This tool only decodes the header and payload claims to show their contents.
What are common JWT payload fields?
sub (subject/user ID), iss (issuer), exp (expiry timestamp), iat (issued at), aud (audience), and custom claims added by the application.
Ad slot: horizontal