Оптимизация Core Web Vitals для SEO

★ 7.9 · marketing

core-web-vitals is a Claude Code skill that optimizes the three Core Web Vitals metrics — LCP, INP, and CLS — which directly affect Google Search ranking and real-user experience. It covers identifying the LCP element via PerformanceObserver, eliminating render-blocking resources, breaking long tasks into chunks using scheduler.yield() with a setTimeout fallback, fixing layout shifts, and wiring up the Speculation Rules API at moderate eagerness to make navigations feel near-instant. Google evaluates all three thresholds at the 75th percentile: LCP ≤ 2.5 s, INP ≤ 200 ms, CLS ≤ 0.1. Use this skill when you need to improve Page Experience scores, fix a failing metric in Search Console, or diagnose interaction latency and visual instability on a live site.