Decode JSON Web Tokens locally in your browser. The tool splits a JWT into header, payload, and signature sections,
pretty prints JSON claims, and summarizes common timestamps such as exp, nbf, and iat.
You can paste a raw token or an Authorization header value that starts with Bearer.
This page decodes tokens only on your device and does not upload them. It does not verify the signature or prove that a token is trusted; use your server-side secret, public key, or identity provider for real verification.