Developer
CORS Policy Tester
Privacy Verified
Analyze CORS headers to understand cross-origin risks.
Privacy & Security
Headers analyzed locally.
Data: None
Client-side-Side
Active
v1.0
About This Tool
This tool runs entirely in your browser. No data is sent to any server, ensuring complete privacy. Simply use the interface above to get started — no registration or login required.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.