JWT Decoder
Decode JWT (JSON Web Token) into Header, Payload, and Signature to instantly inspect the contents
JWT Token Input
Paste a JWT in the standard 3-part format separated by dots (.) for instant decoding.
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Use Cases
Paste an Access Token from an API response to instantly inspect the user ID, roles, expiration time (exp), and other payload claims.
Quickly verify that a JWT issued by your backend contains the correct claims and that the algorithm is configured as expected.
Copy a JWT from a Postman or curl response and paste it here to understand the exact claim structure returned by the server.
Automatically converts exp, iat, and nbf Unix timestamps to human-readable dates so you can easily check token validity periods.
Pro Tips
Click the 'Paste' button at the top or use Ctrl+V directly in the textarea to instantly paste your JWT from the clipboard.
Decoding happens instantly as you type or paste. No need to click any button — the result appears the moment you paste the token.
If the payload contains exp, iat, or nbf claims, their Unix timestamps are automatically converted to human-readable date/time format.
This tool runs entirely in your browser. Your token is never sent to any server, making it safe to use with sensitive tokens.