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JWT Decoder

Decode a JSON Web Token's header and payload and check its expiry.

How it works

A JWT is three Base64URL parts. This tool decodes the header and payload and shows the issued-at, not-before and expiry times in your local time zone.

Verification

Decoding is not verification. To trust a token you must check its signature with the right key on your server.

Frequently asked questions

Is it safe to paste a token?

Decoding is done in your browser and nothing is uploaded, but still avoid pasting live production tokens into any website.

Why does it say expired?

The exp claim is a Unix timestamp; if it's earlier than the current time the token is expired.

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