Lighthouse Optimization

Improving Lighthouse scores.

Improve LCP

Optimize images
• Use modern formats (WebP, AVIF)
• Properly size images
• Lazy load below fold

Preload critical resources
 rel="preload" as="image" href="hero.jpg">

Reduce server response time
• Use CDN
• Enable caching
• Optimize backend

Improve FID/TBT

Reduce JavaScript execution
• Code splitting
• Remove unused code
• Defer non-critical JS

Use Web Workers
Move heavy processing off main thread

Optimize third-party scripts
• Load async
• Use facade pattern

Improve CLS

Set image dimensions
 width="800" height="600" src="image.jpg">

Reserve space for ads
min-height on ad containers

Avoid inserting content above existing
Do not inject banners or modals dynamically

Use font-display
@font-face {
  font-display: swap;
}

Quick Wins

Enable text compression
Gzip/Brotli for text assets

Minify CSS/JS
Use build tools (Webpack, Vite)

Remove render-blocking resources
 rel="stylesheet" media="print" onload="this.media=all">

Use HTTP/2
Multiplexing, header compression