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SEO & Web Toolsclient-side

Security Headers Analyzer

Analyze HSTS, CSP, X-Frame-Options, and related headers.

Frequently asked questions

Are results simulated?
No. Weblexia performs a live HTTP fetch and runs real audit rules on the response. Lab metrics are labeled when field data is unavailable.
Can I scan localhost?
Private and local network addresses are blocked for security. Use a public URL or staging domain.
Security Headers Analyzer — Free Online Tool | Weblexia Tools