Back to notes

Web Performance Optimization

Key strategies for optimizing web application performance.

June 25, 2026
Performance
Web Development
Optimization

Core Web Vitals

Focus on these metrics:

  • LCP: Largest Contentful Paint (< 2.5s)
  • FID: First Input Delay (< 100ms)
  • CLS: Cumulative Layout Shift (< 0.1)

Optimization Techniques

  1. Code Splitting: Load only what you need
  2. Image Optimization: Use modern formats
  3. Caching: Leverage browser cache
  4. Minification: Reduce file sizes
  5. Lazy Loading: Load components on demand

Tools

  • Google PageSpeed Insights
  • Lighthouse
  • WebPageTest
  • GTmetrix