Decode JWT headers and payloads locally in your browser. Inspect expiry timestamps; decoding never verifies a signature.
Paste or load your input, run the browser-based utility, then review, copy, or download the result. Tool input remains in browser memory while the transformation runs.
No. Anyone can decode a JWT payload. Trust requires signature verification against a known key and issuer.
No. This decoder works locally in the browser.
JavaScript is required to run this browser-based utility.