Inspect claims quickly
Review standard JWT claims such as subject, issuer, audience, issued-at time, and expiration.
JWT Decoder Online
Decode JWT header and payload claims in the browser so you can inspect token contents, standard claims, and expiry information without pasting secrets into a remote service. This page is for inspection only and does not verify signatures.
JWT Decoder
JWT decoder notes
Keep tokens local
Decode tokens locally in the browser instead of sending them to a third-party website.
Verify separately
Use this page to inspect token contents, then verify signatures in your auth stack with the correct key.
JWT decoder FAQ
What does a JWT decoder do?
A JWT decoder reads the base64url-encoded header and payload sections of a token so you can inspect claims such as sub, iss, aud, iat, nbf, and exp.
Does decoding a JWT verify the signature?
No. Decoding a JWT only reveals its contents. Signature verification must be performed separately with the correct key and algorithm.
Does this JWT decoder upload my token?
No. The decoder runs locally in the browser, so the token stays on your device while you inspect its contents.