🛡️ Signature Not Verified (Secret missing)
Header (Algorithm & Token Type)
// Header data
Payload (Data & Claims)
// Payload data
🛡️Privacy Guarantee: Decoding and verification happen entirely in your browser using JavaScript. No data is sent to our servers.
About Online JWT Decoder & Verifier
JSON Web Token (JWT) is an open standard that defines a compact and self-contained way for securely transmitting information between parties. Our tool allows you to not only inspect the content but also verify the signature locally.
How it works?
- The token is split into three parts: Header, Payload, and Signature.
- The Header and Payload are decoded from Base64Url to readable JSON.
- The Signature is verified using your provided secret and the Web Crypto API, all within your browser.