Google Research,, sampled 11M global mWeb domains loaded using a globally representative 4G connection, Jan. 2018.


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On 70% of the mobile landing pages analyzed, it took >5 seconds for visual content above the fold to display, and >7 seconds to fully load all visual content above and below the fold.

January 2018 Google Research

Even as most traffic is now occurring on 4G instead of 3G, the majority of mobile sites are still slow and bloated with too many elements.

January 2018 Google

As the number of elements — text, titles, images — on a page goes from 400 to 6,000, the probability of conversion drops 95%.

December 2017 Google/SOASTA

As page load time goes from one second to 10 seconds, the probability of a mobile site visitor bouncing increases 123%.

December 2017 Google/SOASTA

of pages were over 1MB, 53% over 2MB, and 23% over 4MB.

January 2018 Google Research

of pages could save more than 250KB and 10% can save more than 1MB that way.

January 2018 Google Research