Know what's
behind any website.
Audit any public website in one click — DNS, SSL, headers, tech stack, redirects, and more.
TLS, headers, cookies, WAF signals
Records, nameservers, DNSSEC, WHOIS
Redirects, robots, sitemap, uptime
Frameworks, servers, analytics, email
Frequently asked
What is Harpd SiteCheck?
Harpd SiteCheck audits public websites across 30+ passive security, DNS, email, website, and technology checks.
How much does a scan cost?
One complete scan costs 1 Harpd Credit. Sign in with your Harpd account before running a scan.
What does a SiteCheck report include?
Each report covers five categories: Security (TLS, headers, cookies, WAF), DNS and domain (records, nameservers, DNSSEC, WHOIS), Email (MX, SPF, DKIM, DMARC), Website surface (redirects, robots, sitemap, uptime), and Technology (frameworks, servers, hosting, analytics).
Can I scan a private or internal website?
No. SiteCheck only scans public http/https targets. Loopback, private, link-local, metadata, multicast, and reserved IPv4 and IPv6 ranges are rejected before any connection is made.
Does Harpd SiteCheck store my data?
No permanent scan history is stored by default. You can export a local JSON copy of any report if you want to keep it.