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Scan your website
in seconds
Security headers, SSL, DNS, TTFB, Core Web Vitals and more — all in one scan. No account needed.
10+
Checks per scan
<10s
Average scan time
Free
No login required
100%
Open source
Security Headers
CSP, HSTS, X-Frame-Options, and 7 more critical headers scored with fix snippets
SSL / TLS Certificate
Real cert data — issuer, expiry, SANs, cipher suite, TLS version via Node.js
TTFB & Timing
DNS lookup, TCP connect, TLS handshake, server processing, redirect breakdown
Core Web Vitals
LCP, CLS, INP, FCP, TBT from Google PageSpeed Insights with thresholds
DNS & RDAP WHOIS
Live A, AAAA, MX, TXT, NS records and modern RDAP registration data
Asset Performance
JS, CSS, image and font inventory with compression, caching and format analysis