JWT Decoder
Decode and inspect JSON Web Tokens (JWT) instantly. View header, payload, and expiration.
What is JWT Decoder?
JWT Decoder is a free online tool that decodes JSON Web Tokens (JWT) and displays the header and payload in a readable format. It also shows expiration status for tokens with exp claims.
How to Use JWT Decoder
- Paste your JWT token in the input field
- Click Decode JWT to see the header and payload
- Check expiration status and copy decoded data
FAQ
Is it safe to paste my JWT here?
Yes. All decoding happens locally in your browser. No data is sent to any server.
Can this tool verify JWT signatures?
This tool decodes and displays JWT contents. Signature verification requires the secret key, which is not needed for inspection.