Website Speed Test Simulator

Test and simulate core web vitals (LCP, FID, CLS) with dummy data to understand website performance metrics.

Test Your Website

Analyzing website performance...

Performance Results

LCP (Largest Contentful Paint)

2.4s
Good: <2.5s, Poor: >4.0s

Measures loading performance. Try to score 2.5 seconds or less.

FID (First Input Delay)

45ms
Good: <100ms, Poor: >300ms

Measures interactivity. Try to score 100 milliseconds or less.

CLS (Cumulative Layout Shift)

0.08
Good: <0.1, Poor: >0.25

Measures visual stability. Try to score 0.1 or less.

Performance Score

Performance Recommendations

  • Optimize images by using next-gen formats (WebP, AVIF) and responsive images.
  • Eliminate render-blocking resources by deferring non-critical CSS and JavaScript.
  • Preconnect to required origins to establish early connections to important third-party domains.
  • Reduce JavaScript execution time by code splitting, tree shaking, and minification.
  • Ensure text remains visible during webfont load by using font-display CSS feature.