User experience and SEO rankings are directly tied to application speed. Optimizing Google's Core Web Vitals (LCP, INP, CLS) is crucial for production web apps.
1. Eliminating Cumulative Layout Shift (CLS)
Layout shifts occur when images or fonts load without pre-reserved dimensions. Always specify width/height aspect ratios or use next/image.
2. Dynamic Imports & Code Splitting
Reduce initial JavaScript bundle size by dynamically importing heavy components not visible in the initial viewport.