Scoring methodology
This page documents how the three indicators shown under “Our tools” are collected and calculated. PageSpeed is a simulated mobile lab measurement. Every reused value is identified and excluded from the latest-run average.
Latest collector run: 2026-10-09 04:17 UTC.
Score sources
The three indicators come from independent third-party services. The links below lead to their official documentation:
Mozilla HTTP Observatory (security)
Automated audit of HTTP security headers (CSP, HSTS, X-Frame-Options, etc.). Result: a letter grade (A+ to F) and a numeric score that can exceed 100. We cap the score at 100 for the average.
developer.mozilla.org/en-US/observatory
Google PageSpeed Insights (mobile performance)
Lighthouse performance measurement in mobile simulation: load time, Core Web Vitals metrics (LCP, INP, CLS). Score out of 100. We exclusively use mobile performance.
RoastMyUrl (SEO and GEO)
Citability audit by search engines and language models (ChatGPT, Claude, Perplexity, Gemini). Public score out of 100, readable on the service hall-of-fame page.
Average computation formula
For each indicator, we compute a simple arithmetic mean using measurements obtained during the latest run across the domains listed below. Reused and unavailable values do not enter the calculation. Mozilla Observatory is capped at 100 to keep the same scale as the other two indicators.
latest-run average = sum(measurements obtained) / count(measurements obtained)Domains included in the average
The table covers the tools presented on this page and koperateur.com. Each source separately identifies the value, its state and its measurement date when known.
Refresh frequency
A server-side task attempts collection every six hours. When a source does not answer, the latest value may remain visible as “reused” with its measurement date, or with an unknown date for older records. No call is made from the visitor browser.
Privacy and security
Requests to third-party services are made server-side on public API endpoints. This collection sends no visitor data. The PageSpeed API key stays server-side and is not exposed to the browser.