Security & Trust
Header Checker
Grade your HTTP security headers from A+ to F, and see exactly what's missing and how to fix it.
What it checks
- ✓Scores six critical security headers: HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy
- ✓Produces one overall 0-100 score and a letter grade, A+ through F
- ✓Flags servers leaking version details through Server or X-Powered-By headers
- ✓Includes a fix recommendation for every header that's missing or misconfigured