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Free Page Speed Test

Test your website's performance and get optimization recommendations

Website Performance Analyzer

Enter a website URL to analyze its performance, Core Web Vitals, and get detailed optimization recommendations powered by Google PageSpeed Insights.

Analyzing website performance...
Performance Analysis Results
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Diagnostic Information

Understanding Page Speed and Core Web Vitals

Page speed is a critical factor for user experience, SEO rankings, and conversion rates. Our tool uses Google PageSpeed Insights to analyze your website's performance and provide actionable recommendations.

Core Web Vitals Explained

  • Largest Contentful Paint (LCP): Measures loading performance. Good LCP is 2.5 seconds or faster.
  • First Input Delay (FID): Measures interactivity. Good FID is 100 milliseconds or less.
  • Cumulative Layout Shift (CLS): Measures visual stability. Good CLS is 0.1 or less.
  • First Contentful Paint (FCP): Measures when the first content appears. Good FCP is 1.8 seconds or faster.
  • Interaction to Next Paint (INP): Measures responsiveness to user interactions.
  • Time to First Byte (TTFB): Measures server response time. Good TTFB is 800ms or less.

Performance Score Categories

  • 90-100 (Green): Good performance, minimal optimization needed
  • 50-89 (Orange): Needs improvement, moderate optimization required
  • 0-49 (Red): Poor performance, significant optimization needed

Common Performance Issues

  • Large Images: Unoptimized images are often the biggest performance bottleneck
  • Render-Blocking Resources: CSS and JavaScript that blocks page rendering
  • Unused Code: JavaScript and CSS that isn't needed for the initial page load
  • Third-Party Scripts: External scripts that slow down page loading
  • Server Response Time: Slow server or database queries

Optimization Strategies

  • Image Optimization: Use modern formats (WebP, AVIF), compress images, implement lazy loading
  • Code Splitting: Load only necessary JavaScript and CSS for each page
  • Caching: Implement browser caching and CDN for static assets
  • Minification: Remove unnecessary characters from CSS, JavaScript, and HTML
  • Critical CSS: Inline critical CSS and defer non-critical styles
  • Preloading: Preload important resources to improve perceived performance

Mobile vs Desktop Performance

  • Mobile-First: Google prioritizes mobile performance for rankings
  • Network Conditions: Mobile users often have slower connections
  • Processing Power: Mobile devices have less computational power
  • Touch Interactions: Mobile requires different optimization for touch events

Why Page Speed Matters

  • User Experience: Faster sites provide better user experience and lower bounce rates
  • SEO Rankings: Google uses page speed as a ranking factor
  • Conversion Rates: Even 1-second delays can significantly impact conversions
  • Mobile Usage: Mobile users are particularly sensitive to slow loading times
  • Accessibility: Faster sites are more accessible to users with slower connections

Best Practices for Performance

  • Regular Testing: Test performance regularly, especially after updates
  • Real User Monitoring: Use tools like Google Analytics to monitor real user performance
  • Performance Budget: Set performance budgets and stick to them
  • Progressive Enhancement: Build fast baseline experiences and enhance progressively
  • Third-Party Audits: Regularly audit third-party scripts and their impact

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