Analyze your website's performance with detailed Core Web Vitals, loading times, and optimization recommendations. Test both mobile and desktop performance.
Review LCP, FID, and CLS-style signals for user experience and SEO troubleshooting.
Separate mobile and desktop performance analysis to optimize for all devices.
Review public performance signals that may vary by network and location.
Website speed affects whether visitors can use a page comfortably. Slow pages can increase abandonment, especially on mobile networks or pages with heavy scripts and images.
Google uses page experience signals as part of search quality evaluation, so speed work is worth treating as both a usability and search hygiene task.
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 a common cause of slow pages. Modern formats, compression, and responsive sizing usually help.
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 so text-based files transfer with less overhead.
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 shows healthy performance signals. Minor optimizations may still be possible.
There are opportunities to improve. Focus on the largest recommendations first.
Significant performance issues were detected. Prioritize fixes that affect initial loading.
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 mobilePublic benchmark datasets such as Google's Chrome User Experience Report can help put speed results in context, but your own visitors and pages matter most.
Prioritize product and payment pages
Watch ads, images, and script weight
Measure dashboards and signup flows
Keep critical information reachable