Benchmarks for Key Page Speed Load Time Metrics This is likely due to the fact that certain CDNs perform significantly better than others. CDN usage was correlated with worse page speed performance. Australia, India and Brazil have the slowest TTFB times.ġ3. China, Japan, and Germany have the fastest TTFB loading times. Siteground and Wix are the slowest among the hosting providers that we analyzed.ġ2. GitHub and Weebly web hosts have the fastest overall TTFB Performance. Use of WebP was significantly less effective at reducing image load times.ġ1. We discovered that using responsive images results in the best overall image loading performance. Each third party script added to a page increases load time by 34.1 milliseconds.ġ0.
Third-party scripts significantly slow down page loading speed. Pages with very low or very high file compression have above-average page speed performance (measured via First Contextual Paint).ĩ. The fastest framework is 213% faster than the slowest.Ĩ. Wink and Gatsby are the fastest Javascript frameworks. Light pages fully load 486% faster than large pages.ħ. Total page weight is the #1 determinant of Fully Loaded page speed. We also found that gzip compression helps images load more quickly on both desktop and mobile.Ħ. Larger pages take 318% longer to visually load compared to smaller pages. Overall page size has a significant impact on desktop and mobile “Visually Complete” loading speed. However, on mobile devices, the number of HTML requests seems to affect TTFB the most.ĥ. On desktop, CDNs have the biggest impact on TTFB.
Wix and WordPress ranked near the bottom.Ĥ. When comparing major CMSs against one another, Squarespace and Weebly have the best overall mobile page speed performance. The average web page takes 87.84% longer to load on mobile vs. The average time it takes to fully load a webpage is 10.3 seconds on desktop and 27.3 seconds on mobile.Ģ. In our analysis of 5.2 million pages, the average desktop Time to First Byte (TTFB) speed is 1.286 seconds on desktop and 2.594 seconds on mobile. Our data revealed some very interesting (and surprising) insights.ġ. Then, we looked at how image compression, CDNs and hosting impact site loading speed. We analyzed 5 million desktop and mobile pages to learn which factors impact page speed.įirst, we established worldwide benchmarks for TTFB, Visual Complete and Fully Loaded load time metrics.
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