Reference-grade guide to performance as a UX concern — Core Web Vitals (LCP/INP/CLS with concrete budgets and fixes), perceived-performance technique (optimistic UI, skeletons vs spinners, instant feedback, prefetch on intent), loading-state and image/font design, and field-vs-lab measurement at p75
Reference-grade guide to performance as a UX concern — Core Web Vitals (LCP/INP/CLS with concrete budgets and fixes), perceived-performance technique (optimistic UI, skeletons vs spinners, instant feedback, prefetch on intent), loading-state and image/font design, and field-vs-lab measurement at p75.