JWT Decoder & Debugger
Decode, verify, and generate JSON Web Tokens entirely in your browser.
Signature verification
Verification is optional and local — your secret never leaves this browser.
Header
Paste a JWT above to decode header and payload.
Payload
Paste a JWT above to decode header and payload.
About JWT debugging
JSON Web Tokens carry signed claims between services. RookJWT never transmits your token to a server — decoding, verification, and signing use the Web Crypto API and jose locally.