Run a comprehensive website health audit — SSL, DNS, DMARC/SPF/DKIM, page performance, uptime, and broken links. Returns a 0-100 health score with letter grade, critical issues, warnings, and actionable recommendations. All checks run in parallel for speed.

Check SSL/TLS certificate validity, expiry date, issuer, protocol version, and SANs. Returns a grade (A-F) based on days until expiry and cert validity.

Resolve all DNS records (A, AAAA, MX, NS, CNAME, TXT, SOA) and check for IPv6 support, MX records, nameserver redundancy, and resolution time.

Validate DMARC, SPF, and DKIM records for a domain. Checks for common misconfigurations, missing records, and provides fix recommendations. DMARC is now mandatory for Gmail/Yahoo/Microsoft.

Measure TTFB, total load time, page weight, redirect chain, compression, and cache headers. Returns performance grade with specific optimization recommendations.

HTTP ping to check if a site is reachable and measure response time.

Extract links from a page and check each for broken responses (4xx/5xx). Returns broken links with status codes and the page they were found on.