JWT Decoder (JSON Web Token)

🔐 JWT Decoder Tool – Free Online JSON Web Token Decoder

The JWT Decoder Tool is a free browser-based utility by Free IT Tools Online to instantly decode JSON Web Tokens (JWTs). View header, payload, and signature securely without server-side processing.

What is a JWT (JSON Web Token)?

A JWT is an open standard (RFC 7519) for securely transmitting information between parties as JSON. Widely used for authentication, authorization, and secure data exchange.

• Header: Algorithm & token type
• Payload: Claims (user info, permissions, etc.)
• Signature: Ensures token integrity

How to Use the JWT Decoder Tool

1. Paste your JWT in the box below.
2. The tool automatically separates header, payload, and signature.
3. View the decoded JSON in a formatted structure.

Try JWT Decoder Tool Now

Paste JWT: Decoded Header:

{}

Decoded Payload:

{}

Key Features

• ✅ Instant decoding in browser
• 🔒 100% secure – no server calls
• 🧩 Readable formatted JSON
• 📋 Copy header or payload
• 🚀 Developer-friendly for debugging authentication

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Final Thoughts

The JWT Decoder Tool is essential for developers, testers, and learners working with JWTs. It’s simple, secure, and fully browser-based. Try it now on Free IT Tools Online.