Core Web Vitals: Optimasi LCP, INP, dan CLS

Optimasi LCP, INP, dan CLS memerlukan pendekatan teknis yang spesifik. Berikut panduan detail untuk setiap metrik.

Largest Contentful Paint (LCP)

Apa yang diukur dan mengapa penting. Common LCP elements. Image optimization fundamentals.

Server response time. Render blocking resources.

Image LCP Optimization

Proper sizing. Modern formats. Lazy loading exceptions untuk LCP element.

CDN usage. Cache policies.

Non-Image LCP

Font loading optimization. Hero section rendering. CSS optimization.

Preload critical resources.

Interaction to Next Paint (INP)

Understanding interactions. JavaScript execution time. Event handler optimization.

Main thread blocking.

JavaScript Optimization

Code splitting. Tree shaking. Debouncing dan throttling.

Third-party script management.

Animation Optimization

CSS transforms. requestAnimationFrame. GPU acceleration.

Avoid layout thrashing.

Cumulative Layout Shift (CLS)

Understanding layout shifts. Space reservation. Dynamic content handling.

Ad placement strategy.

Image CLS Prevention

Width dan height attributes. Aspect ratio boxes. Placeholder techniques.

Loading strategies.

Dynamic Content CLS

Skeleton states. Ad container sizing. Font loading shifts.

Fixed position elements.

Tools dan Measurement

Browser DevTools. Lighthouse. PageSpeed Insights. Chrome User Experience Report.

Real User Monitoring (RUM).

Common Patterns

E-commerce patterns. News/media patterns. SPA patterns.

Static site patterns.

Budgeting

Performance budgets. Metrics thresholds. Monitoring dashboards.

Alerting setup.

Penutup

Mastering Core Web Vitals memerlukan understanding teknis dan continuous optimization.