Google has used page speed as a ranking signal since 2010 and formalized it with Core Web Vitals in 2021. Beyond rankings, page speed directly affects conversion rates — every second of additional load time is associated with measurable drops in conversions. ARC Marketing's page speed optimization addresses the underlying causes, not just the symptoms.
Google's Page Experience signals use Core Web Vitals as direct ranking inputs: Largest Contentful Paint (loading performance), Cumulative Layout Shift (visual stability), and Interaction to Next Paint (responsiveness). Sites with poor Core Web Vitals scores face a ranking disadvantage in competitive searches where other quality signals are close.
Beyond rankings, speed affects user behavior at every step of the funnel. Pages that load slowly have higher bounce rates, lower time on site, and lower conversion rates. Google's own research has shown that a 1-second delay in mobile load times reduces conversions by up to 20%. Improving page speed is both an SEO investment and a direct revenue investment.
Full assessment of LCP, CLS, and INP scores — field data from Chrome UX Report and lab data from PageSpeed Insights — with root cause identification for failing metrics.
Identification and removal or deferral of render-blocking JavaScript and CSS that delays First Contentful Paint and time to first meaningful interaction.
Conversion of images to WebP, implementation of responsive srcset for proper size delivery, critical image preloading, and lazy loading for below-fold images.
Browser cache headers, server-side page caching, and object caching (Redis or Memcached) configuration — reducing server response time and repeat-visitor load time.
Identification and resolution of CLS sources — images without dimensions, web font loading shifts, dynamically injected content — for a stable visual layout.
Post-optimization monitoring of Core Web Vitals in Google Search Console and PageSpeed Insights — tracking score improvements and catching regressions.
Google defines "Good" thresholds as: LCP (Largest Contentful Paint) under 2.5 seconds, CLS (Cumulative Layout Shift) under 0.1, and INP (Interaction to Next Paint) under 200 milliseconds. "Needs Improvement" is LCP 2.5–4s, CLS 0.1–0.25, INP 200–500ms. "Poor" is beyond those thresholds. The ranking benefit applies when your field data (real user data from Chrome UX Report, visible in Search Console) shows "Good" on all three metrics. Lab scores from PageSpeed Insights are directional — useful for diagnosis and improvement tracking — but field data is what Google uses for ranking.
Mobile performance differs from desktop for several interconnected reasons: mobile CPUs are less powerful, executing JavaScript more slowly; mobile networks have higher latency and lower bandwidth than desktop connections; and mobile screens require different image sizes. A site built primarily for desktop often has oversized images delivered to mobile, unoptimized JavaScript that runs poorly on mobile CPUs, and layouts that reflow expensively on smaller screens. Optimizing specifically for mobile — smaller initial JavaScript bundle, mobile-appropriate image sizes, reduced layout complexity — is typically where the most impactful performance gains are found.
Core Web Vitals are a confirmed Page Experience ranking signal, but Google has described them as a tiebreaker rather than a dominant signal. For queries where competing pages have very similar content quality, backlink profiles, and relevance signals, Core Web Vitals performance can be the differentiating factor. In practice, the indirect effects may be larger than the direct ranking signal: a faster site with better behavioral metrics (lower bounce rate, longer sessions) sends stronger user satisfaction signals, and user satisfaction signals are weighted heavily in Google's quality assessment. Treating page speed as both a direct ranking factor and an indirect conversion and engagement factor captures its full value.
Start with a strategy call. We’ll review your current performance and outline the fastest path to measurable growth.