Security Headers Checker

Generate an HTTP Observatory-style report and scan important security headers like HSTS, CSP, X-Frame-Options, Referrer-Policy, Permissions-Policy, and more.

Tip: Results are cached for a few minutes for faster repeated checks.

Website Security Headers Report (HTTP Observatory Style)

A strong security header policy helps browsers block common attacks like cross-site scripting (XSS), clickjacking, and insecure protocol downgrades. This free tool by Sync Soft Solution checks key response headers and generates a practical score and grade.

What this tool checks

  • HSTS for HTTPS enforcement
  • CSP to reduce XSS risk
  • X-Frame-Options / frame-ancestors to mitigate clickjacking
  • X-Content-Type-Options to prevent MIME sniffing
  • Referrer-Policy and Permissions-Policy for privacy and feature control
  • COOP / COEP / CORP for modern cross-origin protection

More tools: SEO & Developer Tools | Learn more about security headers: MDN Web Docs | Need help hardening your site? Sync Soft Solution

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