JWT Decoder
Decode JSON Web Tokens (JWT) to view header, payload, and signature content
How to Use
- Paste your JWT token
- Click Decode JWT
- View the decoded header, payload, and signature
All processing is done in your browser, and files are never sent to a server.
Frequently Asked Questions
What information does a JWT contain?
A JWT contains three parts: a Header (algorithm and token type), a Payload (claims/data), and a Signature (verification).
Does this tool verify the signature?
This tool decodes and displays the JWT contents but does not verify the cryptographic signature.
Is it safe to paste my JWT here?
Yes, all processing happens locally in your browser. Your token is never sent to any server.