Decode and inspect JWT (JSON Web Tokens) online. View the header, payload, and verify token structure.
Want to jump straight in? Use our free JWT Decoder tool directly.
Go to the JWT Decoder tool on UtilsNow. It decodes tokens entirely in your browser for security.
Copy the JWT token from your application, API response, or authentication header and paste it into the input field.
The tool displays the decoded header showing the algorithm (e.g., HS256, RS256) and token type.
View the decoded payload with all claims including iss, sub, exp, iat, and any custom claims in a readable format.
The tool shows whether the token is expired by comparing the exp claim against the current time.
Use our free JWT Decoder tool — no signup, no uploads, works directly in your browser.
Open JWT DecoderYes, this tool decodes tokens entirely in your browser. Your JWT never leaves your device and is not sent to any server.
The tool decodes and displays the token structure. For full signature verification, you need the secret key or public key used to sign the token.
The decoder displays tokens signed with any algorithm (HS256, HS384, HS512, RS256, RS384, RS512, ES256, etc.) since it only decodes the base64 content.