JWT Decoder
Decode and verify JSON Web Tokens instantly.
Free, fast, and privacy-friendly online JWT decoder tool
What is a JWT Decoder?
JWT Decoder is a free online tool that lets you instantly decode and verify JSON Web Tokens (JWTs). Whether you're debugging authentication, inspecting token payloads, or learning about JWTs, this tool makes it fast and easy. It's perfect for developers, security professionals, and anyone working with APIs.
Why use this JWT Decoder?
- Decode JWT tokens instantly
- View header and payload in a readable format
- Great for debugging, development, and security checks
- Mobile-friendly and privacy-focused
How to use the JWT Decoder
- Paste your JWT token in the input area.
- Click Decode to see the header and payload.
- Copy the decoded data as needed.
Frequently Asked Questions
What is a JWT?
A JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties, commonly used for authentication and authorization.
Is this tool free and private?
Yes! All decoding happens in your browser. No data is sent to any server.