Backlinko.com analyzed 5.2 million desktop and mobile pages and in this article they published what they learned about page speed.
The authors learn which factors impact page speed. First, they established worldwide benchmarks for Time To First Byte (TTFB), Visual Complete and Fully Loaded load time metrics. Then, they looked at how image compression, Content Delivery Networks (CDN) and hosting impact site loading speed.
Their data revealed some very interesting (and surprising) insights:
- Average desktop Time to First Byte (TTFB) speed is 1.286 seconds on desktop and 2.594 seconds on mobile
- On desktop, CDNs have the biggest impact on TTFB. However, on mobile devices, the number of HTML requests seems to affect TTFB the most
- Larger pages take 318% longer to visually load compared to smaller pages
- Light pages fully load 486% faster than large pages
- Third-party scripts significantly slow down page loading speed
- Using responsive images results in the best overall image loading performance. Use of WebP was significantly less effective at reducing image load times
… and much more in this article full of revealing facts. Great resource for anybody into web development!
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