Google's Core Web Vitals — Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) — directly affect search visibility and patient trust. For dental and clinic websites, a 2-second LCP difference can mean losing the booking to a competitor whose site feels instant on mobile.
Targets we ship to
P4P clinic builds target LCP under 2.5s on 4G, INP under 200ms, and CLS below 0.1. We measure on real devices, not just Lighthouse lab scores — because your patients use mid-range Android phones, not MacBook Pros on fiber.
- Hero images: WebP/AVIF, explicit width/height, fetchpriority on LCP element
- Fonts: subset WOFF2, preload critical weights only
- Third-party scripts: defer analytics, no render-blocking widgets
- WordPress: object cache, optimized autoload, minimal plugin surface
Cinematic design without the penalty
StartSmile and ProGlow use CSS-driven motion and selective WebGL — not full-page video backgrounds that crush LCP. We load particle effects after first paint and pause them when the tab is hidden, keeping INP stable on lower-end hardware.
Measure before you redesign
We include a baseline Lighthouse and CrUX report in every web project scope. If your current clinic site scores below 70 on mobile performance, we show exactly which assets to cut or defer before writing a single line of new code.