Performance Metrics
Core Web Vitals and Lighthouse scores
Homepage
https://www.cloudflare.com 98
Performance 96
Accessibility 100
Best Practices 100
SEO Core Web Vitals
| Metric | Value | Target | Status |
|---|---|---|---|
| First Contentful Paint | 0.8s | < 1.8s | ✅ 100 |
| Largest Contentful Paint | 1.2s | < 2.5s | ✅ 100 |
| Total Blocking Time | 50ms | < 200ms | ✅ 100 |
| Cumulative Layout Shift | 0.001 | < 0.1 | ✅ 100 |
| Speed Index | 1.4s | < 3.4s | ✅ 98 |
Product Pages
https://www.cloudflare.com/application-services/ 95
Performance 94
Accessibility 100
Best Practices 100
SEO Core Web Vitals
| Metric | Value | Target | Status |
|---|---|---|---|
| First Contentful Paint | 0.9s | < 1.8s | ✅ 98 |
| Largest Contentful Paint | 1.5s | < 2.5s | ✅ 96 |
| Total Blocking Time | 80ms | < 200ms | ✅ 100 |
| Cumulative Layout Shift | 0.005 | < 0.1 | ✅ 100 |
| Speed Index | 1.8s | < 3.4s | ✅ 94 |
92
Performance 95
Accessibility 96
Best Practices 100
SEO Core Web Vitals
| Metric | Value | Target | Status |
|---|---|---|---|
| First Contentful Paint | 1.0s | < 1.8s | ✅ 95 |
| Largest Contentful Paint | 1.8s | < 2.5s | ✅ 90 |
| Total Blocking Time | 120ms | < 200ms | ✅ 98 |
| Cumulative Layout Shift | 0.002 | < 0.1 | ✅ 100 |
| Speed Index | 2.1s | < 3.4s | ✅ 91 |
🎯 Performance Best Practices
Image Optimization
- Use WebP format with fallbacks
- Implement lazy loading
- Serve via Cloudflare Images CDN
- Responsive srcset for all images
JavaScript Optimization
- Code splitting and tree shaking
- Defer non-critical scripts
- Minimize third-party scripts
- Use modern ES modules
CSS Optimization
- Inline critical CSS
- Remove unused CSS
- Use CSS containment
- Minimize reflows/repaints
Monitoring
- Real User Monitoring (RUM)
- Synthetic testing weekly
- Performance budgets
- Lighthouse CI integration