Four Dimensions, One Score
Core Web Vitals & lab metrics
A Google PageSpeed Insights (Lighthouse) run on mobile — the performance score, LCP, CLS, TBT and FCP, graded on Google’s own thresholds.
Server response & caching
Measured from our servers: time to first byte, whether the page was served from a cache, Brotli/GZIP compression, redirect chains and CDN evidence.
Asset optimization
Render-blocking resources, minified CSS/JS, modern image formats, lazy loading and total page weight — the hygiene layer between fast and slow.
Platform & xSpeed readiness
Is it WordPress, which caching plugin is answering, and is xSpeed’s MCP endpoint live — because every failing check maps to an xSpeed feature that fixes it.
Improved after scanning real re-scans, same rubric on both dates
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Every Failing Check Comes With Its Fix
Other speed tests stop at the problem. This one maps each failure to the xSpeed feature that solves it — and if your site runs xSpeed with its MCP server connected, your AI assistant can apply the whole report for you and re-verify the score.