Resource Hints i 2026: preload, preconnect, prefetch og fetchpriority
Komplet guide til resource hints i 2026: hvornår preload, preconnect, dns-prefetch og fetchpriority hjælper LCP, og hvordan du måler effekten i feltdata.
Priya is a frontend performance engineer with 11 years of experience untangling slow React and Next.js apps. She spent four years at Shopify on the Storefront Performance team, where she drove a project that cut median LCP across the Online Store theme platform from 3.4s to 1.8s by rewriting the critical render path and killing third-party tag bloat. Before that she shipped checkout perf work at Klarna. These days she runs an independent practice helping Series B/C ecommerce companies hit a 75th-percentile INP under 200ms before they bother with redesigns. She has a soft spot for Lighthouse CI in pull-request gates and writes most of her perf budgets in YAML. Outside work she's slowly restoring a 1998 Honda CB400 and arguing with her partner about whether RUM beats lab data (it does).
Komplet guide til resource hints i 2026: hvornår preload, preconnect, dns-prefetch og fetchpriority hjælper LCP, og hvordan du måler effekten i feltdata.
Lær hvordan Speculation Rules API kan reducere LCP til næsten nul gennem prerender og prefetch. Praktisk guide med eagerness-niveauer, dokumentmønstre, Chrome DevTools-fejlfinding og produktionsklar konfiguration for 2026.
Lær at reducere din JavaScript-bundle og forbedre Core Web Vitals med code splitting, tree shaking, Brotli-komprimering og strategier for at minimere main thread-blokering. Med kodeeksempler til 2026.