~/tools / security-headers

Security Headers Checker

Scan HTTP security headers. Grades HSTS, CSP, X-Frame-Options and others, with explanations of what each header protects.

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[ ERROR ] SSL error: SSL_connect returned=1 errno=0 peeraddr=192.124.249.6:443 state=error: certificate verify failed (certificate has expired)
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// Save yourdomain.com → we'll run this daily and alert on changes. /signup →