Decode and inspect JSON Web Tokens instantly. View header, payload, and signature claims with complete privacy - your tokens never leave your browser.
Decode JWT NowPaste any JWT and instantly see the decoded header and payload. View all claims including sub, iss, exp, iat, and custom claims.
Get beautifully formatted, syntax-highlighted JSON output. Easy to read and copy for debugging or documentation purposes.
Your JWT tokens are decoded entirely in your browser. Nothing is sent to any server - perfect for sensitive authentication tokens.
Automatically detect and display token expiration times. See at a glance if your JWT is expired or still valid.
No signup, no limits, no tracking. Decode as many JWTs as you need for development and debugging, forever free.
Built for developers by developers. Supports all standard JWT algorithms including HS256, RS256, ES256, and more.
Copy your JSON Web Token and paste it into the decoder input field. The token format is automatically detected.
Instantly see the decoded header (algorithm, type) and payload (claims, expiration, issuer) in readable JSON format.
Use the decoded information to debug authentication issues, verify claims, or understand token structure.
Yes. ZippyEdit decodes JWT tokens entirely in your browser using JavaScript. Your tokens are never sent to any server, making this the safest way to inspect sensitive authentication tokens online.
JWT (JSON Web Token) is a compact, URL-safe token format used for securely transmitting information between parties. It consists of three parts: header, payload, and signature, separated by dots.
This tool decodes and displays JWT contents. Signature verification requires the secret key or public key, which should never be shared in a browser tool. For signature verification, use server-side validation.
The decoder can parse JWTs using any algorithm including HS256, HS384, HS512, RS256, RS384, RS512, ES256, ES384, ES512, and PS256. The algorithm is displayed in the decoded header.
No signup required. Start decoding instantly.
Open JWT Decoder