JWT Tool

Encode, decode, and verify JSON Web Tokens, highlighting headers, payloads, and signatures.

JWT Token

Enter your JWT token to decode

Secret Key (for verification)

About JWT

JSON Web Tokens (JWT) are an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed. JWTs can be signed using a secret (HMAC algorithm) or a public/private key pair using RSA or ECDSA.

Security Note: Never encode sensitive information in JWT payloads unless you encrypt the token.

Verification: Tokens on this page are verified client-side only for demonstration purposes.