JWT Decoder

Paste any JSON Web Token (JWT) to instantly decode and inspect its contents. The decoder splits the token into its three parts — Header, Payload, and Signature — and displays each section in a readable format.

• Header: reveals the signing algorithm (e.g. HS256, RS256) and token type.
• Payload: shows all claims including subject, issued-at, expiry, and custom fields. Timestamps are shown in human-readable UTC.
• Expiry check: automatically detects whether the token has expired based on the exp claim.

All decoding is performed entirely in your browser — your token is never sent to any server.