Free · Browser-Side · No Server
JWT Decoder & Inspector
Paste a JWT token to instantly decode and inspect the header and payload — entirely in your browser.
JWT Token Input
Decode Instantly
Paste any JWT token to see its header and payload decoded from Base64url in milliseconds.
100% Private
No token ever leaves your browser — all decoding runs in JavaScript client-side.
Inspect Claims
See iat, exp, sub, aud and all custom claims in a formatted, readable view.
Signature Note
Signature display only — always verify JWT signatures server-side with your secret key.