Analyze your website's performance with detailed Core Web Vitals, loading times, and optimization recommendations. Test both mobile and desktop performance.
Comprehensive analysis of LCP, FID, and CLS metrics for better user experience and SEO.
Separate mobile and desktop performance analysis to optimize for all devices.
Test website performance from multiple geographic locations worldwide.
Website speed is no longer optional—it directly impacts your bottom line. Studies show that a 1-second delay in page load time can result in a 7% reduction in conversions, 11% fewer page views, and a 16% decrease in customer satisfaction. For e-commerce sites, this translates to significant revenue loss.
Google has confirmed that page speed is a ranking factor for both desktop and mobile searches. Slow websites not only frustrate users but also get penalized in search results, making speed optimization essential for SEO success.
Core Web Vitals are Google's standardized metrics for measuring user experience. These metrics focus on loading performance, interactivity, and visual stability—the three pillars of a great web experience.
Measures loading performance—specifically, when the largest content element becomes visible. This could be an image, video, or block of text.
Measures interactivity—the time from when a user first interacts with your page to when the browser can respond to that interaction.
Measures visual stability—how much content unexpectedly shifts during page load. Unexpected shifts frustrate users and can cause misclicks.
Large, uncompressed images are the #1 cause of slow websites. Using modern formats like WebP and proper sizing can reduce image sizes by 25-80%.
CSS and JavaScript files that block page rendering can delay First Contentful Paint significantly. Defer non-critical scripts and inline critical CSS.
Without proper cache headers, browsers re-download assets on every visit. Setting appropriate cache policies can dramatically improve repeat visit performance.
Each resource (image, script, stylesheet) requires a separate HTTP request. Combining files, using sprites, and lazy loading reduces request overhead.
Enable GZIP or Brotli compression on your server. This can reduce text-based file sizes by 70-90%.
Content Delivery Networks serve assets from servers closest to users, reducing latency significantly.
Compress images, use responsive sizing, and implement lazy loading for below-the-fold content.
Remove unused code, split bundles, and defer non-critical scripts to improve Time to Interactive.
Your website performs excellently. Minor optimizations may still be possible but aren't critical.
There are opportunities to improve. Focus on the recommendations provided to boost performance.
Significant performance issues detected. Prioritize fixing critical issues to improve user experience.
Mobile devices face unique performance challenges that desktop computers don't. Limited CPU power, slower network connections (especially on 3G/4G), and smaller memory make mobile performance inherently harder to optimize. Google's mobile-first indexing means your mobile score carries more weight for search rankings than desktop.
A common mistake is testing only on high-end phones. Real-world users often browse on mid-range devices with 2-4 GB of RAM and older processors. Our speed test simulates these conditions by applying CPU throttling and network latency to give you a realistic picture of how most visitors experience your site.
srcset to serve smaller files on mobileHow does your website compare to industry averages? These benchmarks are based on real-world data from millions of websites tested through Google's Chrome User Experience Report (CrUX).
Median mobile load time
Median mobile load time
Median mobile load time
Median mobile load time