JWT Decoder
Paste a JSON Web Token to see its header, payload, and expiry status. Runs entirely in your browser.
What is a JWT Decoder?
A JSON Web Token (JWT) is a compact, URL-safe token format used for authentication and authorization. This decoder splits the token into its three parts — header, payload, and signature — and displays the contents in a readable format.
This tool does not verify signatures (that requires the signing key). It runs entirely in your browser — no tokens are sent to any server.
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