Core Web Vitals are Google's essential metrics for measuring user experience quality on the web. Frontend Accelerator is optimized to achieve excellent scores across all three Core Web Vitals, directly impacting SEO rankings and user satisfaction.

The Three Core Web Vitals:

1. Largest Contentful Paint (LCP)

Measures loading performance

Target: < 2.5 seconds

Optimizations in Frontend Accelerator:

Next.js Image component with automatic optimization
Static generation for instant page loads
Edge caching with CDN distribution

2. First Input Delay (FID) / Interaction to Next Paint (INP)

Measures interactivity

Target: < 100ms (FID) or < 200ms (INP)

Optimizations:

Code splitting reduces main thread blocking
Lazy loading for non-critical components
Server Components minimize client JavaScript

3. Cumulative Layout Shift (CLS)

Measures visual stability

Target: < 0.1

Optimizations:

Fixed dimensions on images and embeds
Reserved space for dynamic content
Font loading with next/font

Monitoring in Frontend Accelerator

import { SpeedInsights } from '@vercel/speed-insights/next';

export default function RootLayout({ children }) {
  return (
    <html>
      <body>
        {children}
        <SpeedInsights />
      </body>
    </html>
  );
}

AI-Friendly: Performance optimizations are built into Next.js patterns that AI tools already understand. AI can identify performance bottlenecks, suggest lazy loading opportunities, and recommend image optimization strategies that improve Core Web Vitals scores.

What is Core Web Vitals?

TL;DR

The Three Core Web Vitals:

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