Website Speed Tester

Dual Version Website Speed Test Tool

Analyze your website’s performance on both mobile and desktop devices. Get actionable insights to improve loading times and user experience across all platforms.

Note: This tool runs entirely in your browser. Some metrics are simulated for demonstration purposes.

Testing website performance. This may take a few seconds…

Mobile Performance

72
Average
3.2s
Page Load Time
420ms
Time to First Byte
2.1MB
Page Size
64
Requests

Desktop Performance

88
Good
1.8s
Page Load Time
220ms
Time to First Byte
1.9MB
Page Size
58
Requests

Performance Comparison

Mobile devices typically have slower processors and network connections, which can significantly impact website performance. The comparison above shows how your website performs under these different conditions.

Mobile Performance Details

Metric Value Status
Page Load Time 3.2 seconds Average
Time to First Byte (TTFB) 420 ms Slow
DNS Lookup Time 35 ms Fast
Connection Time 85 ms Average
DOM Content Loaded 2.1 seconds Average
Full Page Load 3.2 seconds Average
Page Size 2.1 MB Average
Number of Requests 64 High
Compression GZIP Enabled Good
Render Blocking Resources 4 resources detected Needs improvement

Mobile Optimization Suggestions

Desktop Performance Details

Metric Value Status
Page Load Time 1.8 seconds Fast
Time to First Byte (TTFB) 220 ms Average
DNS Lookup Time 18 ms Fast
Connection Time 42 ms Fast
DOM Content Loaded 1.2 seconds Fast
Full Page Load 1.8 seconds Fast
Page Size 1.9 MB Good
Number of Requests 58 Average
Compression GZIP Enabled Good
Render Blocking Resources 2 resources detected Moderate

Desktop Optimization Suggestions

Comprehensive Optimization Guide

Mobile-Specific Optimizations
  • Optimize Images: Use WebP format and serve appropriately sized images for mobile screens.
  • Minimize JavaScript: Reduce and defer non-critical JavaScript to speed up rendering.
  • Implement Lazy Loading: Load images and content only when they’re about to enter the viewport.
  • Use Mobile-First CSS: Design with mobile constraints in mind from the beginning.
  • Reduce Redirects: Each redirect adds additional HTTP requests and latency.
Desktop-Specific Optimizations
  • Leverage Browser Caching: Set appropriate cache headers for static resources.
  • Optimize CSS Delivery: Eliminate render-blocking CSS and use critical CSS inlining.
  • Enable Compression: Use GZIP or Brotli compression for all text-based resources.
  • Use a CDN: Distribute content geographically closer to your users.
  • Minimize HTTP Requests: Combine files where possible and use sprites for images.
Cross-Platform Optimizations
  • Improve Server Response Time: Optimize your backend code and database queries.
  • Enable HTTP/2: Take advantage of multiplexing and server push features.
  • Minify Resources: Remove unnecessary characters from code without changing functionality.
  • Optimize Web Fonts: Use font-display: swap and subset fonts to include only needed characters.
  • Reduce Third-Party Scripts: Evaluate and minimize the impact of third-party code.

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