Improving Angular Performance Scores By Over 150%

The Challenge

When working with a major North American footwear retailer, we faced critical performance issues:

• Largest Contentful Paint (LCP) of 8.2s
• Cumulative Layout Shift (CLS) of 0.45
• First Input Delay (FID) of 320ms

Key Optimizations

1. Lazy Loading Revolution

@NgModule({
imports: [
  RouterModule.forRoot(routes, {
    preloadingStrategy: CustomPreloadingStrategy
  })
]
})
export class AppModule {}

2. CLS Mitigation Techniques

We implemented advanced layout stability patterns including:

• Reserve space for async content
• CSS containment strategies
• Predictive loading heuristics

Results:

• LCP: 2.1s (↓74%)
• CLS: 0.12 (↓73%)
• FID: 89ms (↓72%)

WIP

... Article still WIP