Decode and inspect JSON Web Tokens
Paste a JWT to instantly decode its header, payload, and signature. View registered claims like exp, iat, and nbf as human-readable dates, and see at a glance whether your token is expired.
This runs entirely in your browser. Your token never leaves your machine — no backend, no tracking, no analytics.
Header
Payload
Signature
Signature verification requires the signing key and is not performed by this tool.