New Industry Benchmarks for Mobile Page Speed

Mobile Page Speed

New Industry Benchmarks for Mobile Page Speed

Consumers are more demanding than ever before. And marketers who are able to deliver fast, frictionless experiences will reap the benefits. Global Product Lead Daniel An set out to help marketers better understand how various industry sectors are performing when it comes to mobile page speed.

The average time it takes to fully load a mobile landing page is 22 seconds, according to a new analysis. Yet 53% of mobile site visitors leave a page that takes longer than three seconds to load. That’s a big problem.

It’s no secret that shoppers expect a fast mobile experience. If there’s too much friction, they’ll abandon their cart and move on. Today, it’s critical that marketers design fast web experiences across all industry sectors. Consumers want to quickly pay bills on finance sites, get rapid results when they’re browsing vacation reviews, and view an article immediately when they click through.

Despite the fact that more than half of overall web traffic comes from mobile,3our data shows that mobile conversion rates are lower than desktop.4 In short, speed equals revenue.

Last month, in an effort to get a better sense of how Google’s advertising partners are doing, we did an analysis of 900,000 mobile ads’ landing pages spanning 126 countries.5 That new analysis confirmed our thesis: The majority of mobile sites are slow and bloated with too many elements.

We dug deep into a wide range of sectors, from finance to travel. Pages from the automotive, retail, and technology sectors, on average, take the longest to load. And they also have some of the most bloated pages on the web.

Our research has been eye-opening. For 70% of the pages we analyzed, it took nearly seven seconds for the visual content above the fold to display on the screen, and it took more than 10 seconds to fully load all visual content above and below the fold.

Recently, we trained a deep neural network—a computer system modeled on the human brain and nervous system—with a large set of bounce rate and conversions data. The neural net, which had a 90% prediction accuracy, found that as page load time goes from one second to seven seconds, the probability of a mobile site visitor bouncing increases 113%. Similarly, as the number of elements—text, titles, images—on a page goes from 400 to 6,000, the probability of conversion drops 95%.6

mobile page speed
Source: Google/SOASTA Research, 2017.

No matter what, faster is better and less is more.

And sometimes, leaner is better too. We found that 70% of pages were over 1MB, 36% over 2MB and 12% over 4MB. That’s enormous for a single mobile page, given that 1.49MB takes seven seconds to load using a fast 3G connection.7 One image in particular caught our attention: It weighed a whopping 16MB.

But despite the bad news, there’s plenty of low-hanging fruit. Simply compressing images and text can be a game changer—30% of pages could save more than 250KB that way. Our analysis shows that the automotive, technology, and business and industrial market sectors have the most room for improvement.

When it comes to mobile pages, speed and size matter. Marketers must keep consumers engaged on mobile and focus on building mobile-first experiences. You can see how your current site scores on mobile friendliness and mobile page speed at Test My Site. Then, check out the charts below for a global perspective across industry sectors, including guidelines for speed, web page size, and the number of content pieces per page.

mobile-page-speed-UK
mobile-page-speed-US
mobile-page-speed-Germany
mobile-page-speed-page-weight-us
mobile-page-speed-page-weight-uk
mobile-page-speed-average page weight
mobile-page-speed-page-weight-germany
mobile-page-speed-index
mobile-page-speed-index-uk
mobile-page-speed-index-us
mobile-page-speed-index-germany
mobile-page-speed-average-time-us
mobile-page-speed-average-time-uk
mobile-page-speed-average-time
mobile-page-speed-average-time-germany

Sources
1 Google Research, Webpagetest.org, Global, sample of more than 900,000 mWeb sites across Fortune 1000 and Small Medium Businesses. Testing was performed using Chrome and emulating a Nexus 5 device on a globally representative 3G connection. 1.6Mbps download speed, 300ms Round-Trip Time (RTT). Tested on EC2 on m3.medium instances, similar in performance to high-end smartphones, Jan. 2017.
2 Google Data, Global, n=3,700 aggregated, anonymized Google Analytics data from a sample of mWeb sites opted into sharing benchmark data, Mar. 2016.
3 Google Analytics data, U.S., Q1 2016.
4 Google Data, aggregated, anonymized data from Google Analytics for U.S. retailers, Apr. 2016.
5 Google Research, Webpagetest.org, Global, sample of more than 900,000 mWeb sites across Fortune 1000 and Small Medium Businesses. Testing was performed using Chrome and emulating a Nexus 5 device on a globally representative 3G connection. 1.6Mbps download speed, 300ms Round-Trip Time (RTT). Tested on EC2 on m3.medium instances, similar in performance to high-end smartphones, Jan. 2017.
6 Google/SOASTA Research, 2017.
7 DoubleClick by Google, “The Need for Speed: How Latency Impacts Publisher Revenue,” Sept. 2016.

Author: Daniel An – Global Product Lead, Mobile Web at Google
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