🔑 JWT Decoder

JWT Decoder — What Is a JSON Web Token?

A JSON Web Token (JWT) is a compact, URL-safe token used to securely transmit information between parties as a JSON object. JWTs are used for authentication and authorization in web applications and APIs. A JWT consists of three Base64-encoded parts separated by dots: the Header, the Payload, and the Signature.

Important Security Note

This tool only decodes the JWT — it does not verify the signature. Anyone can decode a JWT, which is why you should never put sensitive data in the payload. The signature verification must be done server-side using your secret key. All decoding happens entirely in your browser — your token is never sent to our servers.

JWT Decoder — Token Decode Karo Aur Payload Dekho

JWT (JSON Web Token) — teen parts mein hota hai: Header, Payload, aur Signature, dots se alag kiye gaye. Iska use user authentication aur API authorization mein hota hai. Hamare JWT Decoder se apne token ka Header aur Payload instantly decode karein aur samjhein. Dhyan rahein: sirf decode hota hai, verify nahi — signature verification server-side hoti hai. Aapka token kabhi server par nahi jaata, sab browser mein hi hota hai.