JWT Decoder
Decode and inspect JSON Web Tokens (JWT) securely online in your browser. Instantly view JWT headers and payloads for debugging, development, or learning—no uploads, no risk of data exposure. 100% private and free.
Runs in your browser
WebAssembly, no server
No signup required
Open and use instantly
Files stay private
Nothing leaves your device
How It Works
Paste your JWT and click Decode.
Key Features
- Decode JWT tokens instantly in-browser
- View header and payload details
- No uploads—100% private
- Great for debugging and learning JWT structure
- Works on all devices
About This Tool
Decode JWT tokens instantly and securely in your browser. View the header and payload details for debugging, learning, or inspecting token contents. No uploads or data sharing—everything happens locally for maximum privacy. Ideal for developers, security researchers, and anyone working with JSON Web Tokens.
Frequently Asked Questions
No, this tool only decodes the token.
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