JWT Parser
Parse the JWT header and payload, and check the expiry time
How to use
This only parses and does not verify the signature — the browser does not have your secret key, so signature verification must be done on the server. This tool is useful for inspecting what claims a token actually carries.
FAQ
Why can it not verify the signature?
Signature verification needs the server secret (HS256) or a public key (RS256) plus the verification logic. Client-side parsing is only for viewing content.
Could the token leak?
No, parsing runs entirely locally in your browser. Still, we recommend never pasting a real production token into any website, including this one.