JWT Debugger
Instantly decode and verify JWT tokens. Paste your JWT below to see the header and payload.
Header
Payload
What is a JWT?
A JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. JWTs are commonly used for authentication and information exchange in web applications.
How does this tool work?
- Paste your JWT token in the input box above.
- The tool decodes the header and payload instantly in your browser.
- Copy the decoded header or payload with a single click.
Is it safe?
Yes! All decoding happens locally in your browser. Your JWT never leaves your device.