What goes into your website trust score?
Seven public signals, blended into one 0-100 grade: global traffic rank percentile (20 points), domain age (20), HTTPS reachability (10), and Google Lighthouse Performance (20), SEO (15), Accessibility (10) and Best Practices (5). The weights sum to 100 and are published here rather than kept proprietary, so any score we show you can be recalculated by hand. The same domain trust score drives the embeddable badge, so what you read on this page is what your visitors see.
How the 0-100 score is calculated
HTTPS is binary: 10 points if the site answers over HTTPS, 0 if it does not. Domain age is linear and saturates at 20 years, so a 20-year-old domain earns the full 20 points and a 10-year-old domain earns 10. Rank percentile and each Lighthouse category are scaled proportionally into their slots. The total maps to a letter grade: A from 85, B from 70, C from 55, D from 35, F below that. If one of our data sources is unreachable when you run a check, that slot contributes 0 points rather than being excluded — so an unusually low score is sometimes a missing signal, and re-running later will correct it. The same applies the first time a site is checked: until Google's Lighthouse result arrives, the four Lighthouse slots are shown as not measured yet and score 0, and that composite is only kept for 15 minutes so the next check picks up the real numbers.
What the trust score does not check
This is not a malware, phishing or scam scanner. It does not consult any blocklist, scan page content, or make any claim about whether a site is fraudulent or safe to buy from — it measures site quality and longevity signals only. For actual safety verdicts, check Google Safe Browsing or your browser's own warnings; we link the Safe Browsing transparency report in the sources below.
Where the numbers come from
Traffic rank comes from the FeedPulse network for sites running our widgets, and from the Tranco research list (with OpenPageRank as a fallback) for everything else. Domain age comes from the registry over RDAP, the modern successor to WHOIS, with the Internet Archive as a fallback when a registry hides the date. Lighthouse scores come from Google's PageSpeed Insights API. Composite scores are cached for 24 hours, so a change you make today will show up on tomorrow's check.
Display your trust grade as a badge
Copy the HTML snippet and drop the badge on your About page, footer or checkout page to show the grade and the date it was last checked. The badge refreshes itself, so it keeps reflecting your current score rather than freezing at whatever it said the day you installed it.
Free for every site, forever — no signup, no email
Paste a URL → see your composite trust grade → copy the HTML snippet → paste it anywhere. Works on WordPress, Shopify, Wix, Webflow, Ghost, Squarespace, Blogger, or any static HTML site.