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Web Performance Guides

3 articles

Web performance is not just a technical metric — it is a direct revenue driver. Google research shows that a 0.1-second improvement in mobile load time increases conversion rates by 8.4% for retail sites and 10.1% for travel sites. These guides cover the complete performance optimization stack: from network-level optimizations (HTTP/2 multiplexing, resource hints, CDN configuration) to rendering performance (critical CSS, layout shift prevention, JavaScript execution cost), and monitoring (Core Web Vitals, Real User Monitoring, Lighthouse CI). You will learn how to diagnose performance bottlenecks using browser DevTools, implement optimizations that measurably improve LCP, INP, and CLS scores, and build performance budgets that prevent regressions as your application grows.

What You'll Learn

  • Core Web Vitals: LCP, INP, CLS — what they measure and how to optimize each
  • Image optimization: format selection, compression, responsive images, and lazy loading
  • JavaScript performance: bundle splitting, tree-shaking, and execution cost reduction
  • CSS optimization: critical CSS extraction, unused CSS removal, and render-blocking prevention
  • Caching strategies: Cache-Control headers, service workers, and CDN configuration
  • Performance monitoring: setting up RUM, Lighthouse CI, and performance budgets

Why This Matters

Google uses Core Web Vitals as a ranking signal, directly connecting performance to search visibility. Beyond SEO, every 100ms of latency costs Amazon 1% in sales. Performance optimization is one of the highest-ROI activities in web development — these guides show you exactly where to focus for maximum impact.

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