Speed Is a Feature
Google research shows 53% of mobile users abandon sites that take over 3 seconds to load. Performance directly impacts conversion rates, SEO rankings, and user satisfaction.
Core Web Vitals
Google's metrics for user experience:
Largest Contentful Paint (LCP)
Target: < 2.5 seconds
Measures when the main content loads. Improve with:
- Optimized images (WebP format, proper sizing)
- Fast server response times
- Efficient CSS delivery
- CDN for static assets
First Input Delay (FID) / Interaction to Next Paint (INP)
Target: < 100ms
Measures interactivity. Improve with:
- Code splitting
- Deferred JavaScript loading
- Web Workers for heavy computation
- Efficient event handlers
Cumulative Layout Shift (CLS)
Target: < 0.1
Measures visual stability. Improve with:
- Size attributes on images
- Reserved space for ads/embeds
- Avoiding dynamic content injection
- Proper font loading
Our Optimization Techniques
Image Optimization
Original: 2MB PNG Optimized: 150KB WebP Result: 92% smaller, same quality
We use:
- Next.js Image component
- Automatic format selection
- Lazy loading below fold
- Responsive sizing
JavaScript Optimization
- Tree shaking unused code
- Code splitting by route
- Dynamic imports for heavy libraries
- Deferred loading of non-critical scripts
CSS Optimization
- Critical CSS inlined
- Unused CSS removal
- Efficient selectors
- CSS containment
Caching Strategy
Static assets: 1 year cache API responses: Varies by data HTML: No cache (always fresh)
Server Optimization
- Edge deployment (CDN)
- Gzip/Brotli compression
- HTTP/2 multiplexing
- Connection keep-alive
Measuring Performance
We use:
- Lighthouse for audits
- WebPageTest for detailed analysis
- Real User Monitoring (RUM)
- Core Web Vitals in Search Console
Real Results
Recent optimization project:
- Before: 6.2s LCP, 45 performance score
- After: 1.8s LCP, 94 performance score
- Result: 35% increase in conversions
Conclusion
Performance optimization is an ongoing process, not a one-time task. At PeakCodeSolutions, we build fast by default and continuously monitor and improve.
performanceweb vitalsoptimizationSEO