How we calculate every score
Every free tool, explained: what's actually measured, how the number is calculated, and where the real limitations are — not a black box.
A domain's Ahrefs Domain Rating (DR) — a 0–100 estimate of overall backlink profile strength.
22 weighted on-page SEO factors, checked directly against the live HTML of the page you enter.
Whether a site sends six security-relevant HTTP response headers, weighted and graded A–F.
LCP, CLS, and INP — Google's real Core Web Vitals — for the page you enter.
A domain's registration date, sourced from public WHOIS/RDAP records.
Whether a site's robots.txt and sitemap.xml are reachable and syntactically valid.
N/A — this tool generates structured data rather than scoring anything.
N/A — this tool renders a preview rather than scoring anything.
Whether a live AI model cites or mentions your domain in response to a real query about your space.
N/A — this tool plans a topical map rather than scoring anything.