Site speed is a business issue
A slow site loses rankings, loses patience, and loses money, in that order of visibility and reverse order of importance. This section treats speed as a business number. The site you are reading is the exhibit: view source, run Lighthouse on it, check its field data.
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Core Web Vitals for business websites: what actually matters in 2026
Core Web Vitals are three field-measured numbers: loading (LCP within 2.5 seconds), responsiveness (INP within 200 milliseconds) and visual stability (CLS below 0.1), judged for real visitors at the 75th percentile. They rarely win rankings alone, but failing them loses visitors, conversions and crawl budget all at once.
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Why your "SEO-friendly" website still fails Core Web Vitals
The phrase "SEO-friendly" on a proposal usually describes the theme's marketing, not its performance. Most failing business sites are sunk by five ordinary culprits: bloated builders, plugin stacks, third-party widgets, unsized media and cheap hosting. Each is fixable, and none requires a rebuild-from-scratch to start.
Terms for this section
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Core Web Vitals
Core Web Vitals are Google's three field-measured user experience metrics: LCP for loading speed, INP for responsiveness to interaction, and CLS for visual stability.