Security Headers
Evaluate HSTS, CSP, X-Frame-Options and related headers, then grade the site's posture.
Enter a value above and run the check to see results here.
How it works
Evaluate HSTS, CSP, X-Frame-Options and related headers, then grade the site's posture.
Frequently asked questions
Is the Security Headers tool free to use?+
Yes. The Security Headers runs directly in NetInsight with no signup required. Free-tier usage is rate limited to keep the service fast for everyone.
Are my queries logged?+
Diagnostic inputs are processed to produce your result and are not sold or shared. See our Privacy Policy for full detail on retention.
How accurate are the Security Headers results?+
Results are fetched live from authoritative sources each time you run a check, so they reflect the current state rather than a cached snapshot.