JWT Viewer & Decoder

Finds, displays, decodes, and copies JWT tokens on the current page.

JWT Viewer & Decoder helps developers inspect JWT tokens available on the current website. It can detect JWTs from cookies, localStorage, and sessionStorage, display the raw token, decode the payload locally in the browser, and let you copy the token with one click. Features: - Detects JWT tokens on the active tab - Reads token-like values from cookies, localStorage, and sessionStorage - Decodes JWT payload locally - Shows common claims such as sub, email, department or role, exp, and iat - Highlights token expiration status - Lets you copy the token quickly - Includes a compact support section with donation link and QR Privacy: JWT Viewer & Decoder does not send token data to external servers. Token inspection and decoding happen locally inside the browser popup.