JWT Decoder – JSON Web Token Parser

Free Online JWT Decoder Tool – View & Debug JSON Web Tokens

JWT (JSON Web Token) is a compact and secure way of transmitting information between parties as a JSON object. This tool helps you decode your JWT tokens easily and securely right in your browser – no data is stored or shared.

🧠 What is a JWT?

A JWT consists of three parts: Header, Payload, and Signature — separated by dots (.). It's commonly used for authentication, secure data exchange, and APIs.

🔎 Why Use This JWT Decoder?

• ✅ Decode JWT instantly in your browser
• ✅ View JSON content from Header and Payload
• ✅ Analyze tokens from API requests, cookies, or sessions
• ✅ Privacy-focused: No data sent to server

🔐 JWT Token Structure

• Header: Contains algorithm and token type
• Payload: Contains user or system data (e.g., ID, roles, expiry)
• Signature: Ensures token integrity and authenticity

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🛡️ Use the tool above to inspect and debug JWT tokens safely, fast, and securely — right from your browser.