LCP under 2.5s, INP under 200ms, and CLS under 0.1 remain ranking signals—marketing sites with heavy scripts fail all three without architectural discipline.
Direct answer: LCP under 2.5s, INP under 200ms, and CLS under 0.1 remain ranking signals—marketing sites with heavy scripts fail all three without architectural discipline.
Hero images: WebP/AVIF, explicit width/height, preload critical image. Defer non-critical CSS. Server TTFB under 200ms via CDN. For WebGL heroes, use static poster + lazy WebGL init.
Break long JavaScript tasks. Defer analytics and chat widgets. Use passive event listeners. Limit DOM size on long landing pages.
Reserve space for ads, embeds, and fonts. Use font-display: swap with matched fallbacks. Never inject content above fold after load.
CrUX field data monthly. PageSpeed Insights per template type. Set performance budgets in CI: max 150KB critical path JS.
DIG Marketing engineers AI-native marketing systems from Pune for India and global markets.