JWT Tool
Use this tool to decode an existing JSON Web Token (JWT) or generate a new one. Switch between "Decode" and "Generate" modes below.
About This Tool
- Paste a JWT token into the input field
- The header, payload, and signature are decoded automatically
- Review the claims in the payload section
- Check the algorithm in the header
- Debugging authentication issues in web applications
- Inspecting token expiration times
- Verifying token claims during API development
- Understanding OAuth2 access token contents
- JWT tokens have three parts separated by dots
- The signature is NOT verified — this tool only decodes
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