JWT Decoder
Decode JWT (JSON Web Token) into Header, Payload, and Signature to instantly inspect the contents
Decode JWT (JSON Web Token) into Header, Payload, and Signature to instantly inspect the contents
Paste a JWT in the standard 3-part format separated by dots (.) for instant decoding.
이 포스팅은 쿠팡 파트너스 활동의 일환으로, 이에 따른 일정액의 수수료를 제공받습니다.
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.
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.