Website Performance Analysis

Report generated on Nov 29, 2023

Performance Overview

Score: 87/100

Page Load Time

1.8s

Time to First Byte

320ms

First Contentful Paint

1.2s

Largest Contentful Paint

2.1s

Core Web Vitals Analysis

LCP (Loading)

Good

2.1s

FID (Interactivity)

Good

58ms

CLS (Stability)

Needs Improvement

0.15

Resource Analysis

Total Page Size: 1.8MB

HTTP Requests: 42

Images (820KB) 45%

JavaScript (620KB) 35%

CSS (180KB) 10%

Fonts (120KB) 7%

Other (60KB) 3%

Speed Metrics

Time to Interactive

2.5s

Total Blocking Time

150ms

Device Comparison

Mobile

3.4s

Desktop

1.8s

Network Simulation

4G

2.1s

3G

5.7s

2G

12.4s

Optimization Recommendations

High Priority

Compress and optimize images to reduce size by ~350KB

Expected improvement: 18% faster loading time

High Priority

Eliminate render-blocking JavaScript in above-the-fold content

Expected improvement: 15% reduction in First Contentful Paint

Medium Priority

Implement browser caching for static assets

Expected improvement: 25% faster page loads for returning visitors

Medium Priority

Minify CSS and JavaScript files

Expected improvement: 7% reduction in file size

Low Priority

Implement a CDN for global performance

Expected improvement: 30% faster loading for international visitors

Actionable Insights

1. Image Optimization

Convert JPGs to WebP format (saving ~200KB)
Implement responsive images with srcset attribute
Lazy load images below the fold

Tools: ImageOptim, Squoosh.app

2. JavaScript Optimization

Defer non-critical JavaScript loading
Split JavaScript bundles for better caching
Remove unused code with tree shaking

Tools: Webpack, Rollup, Terser

3. Caching Strategy

Set appropriate cache headers (max-age=31536000)
Implement service workers for offline caching
Use versioned file names for cache busting

See detailed guide: web.dev/http-cache

Website Speed Performance Analyzer