Analyze CORS policies and HTTP security headers (CSP, HSTS, X-Frame-Options, etc.) for any URL — identify misconfigurations, missing headers, and security risks.
🚀 Launch Free Tool →✅ Access-Control-Allow-Origin analysis
✅ CSP policy inspector
✅ HSTS, X-Frame-Options, COEP check
✅ Missing header warnings
✅ Security score summary
CORS (Cross-Origin Resource Sharing) is a browser security mechanism that controls which domains can make requests to your API. A misconfigured CORS header can expose your API to cross-site attacks.
CSP is an HTTP header that tells browsers which sources of content (scripts, styles, images) are trusted. A strict CSP significantly reduces XSS attack surface.
HTTP Strict Transport Security (HSTS) forces browsers to only connect to your site over HTTPS, preventing SSL stripping attacks. Google also gives a minor ranking boost to HSTS-enabled sites.