Attention span today is at all time low!

So websites are trying to catch up …

Let's look at some stats.

Website Speed Statistics (Load Time Really Really Matters)

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This is a comprehensive list of highly relevant website speed statistics.

I’m only covering super reliable studies that took months/years to complete and will likely remain valuable for the decade ahead.

1. Conversion Rate Doubles (2X) for Every Second of Website Speed Gain. (Deloitte)


Deloitte did a quick one-month study on 37 big-name brands, and they found that even a tiny 0.1 Second Improvement in load time can seriously impact how users interact with it and boost your conversion rates.

Retail shoppers spent almost 10% more, while luxury consumers bought 8% more.


That is an astounding ROI …

For something as “simple” as a website speed.

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This alone was enough to motivate me look into my core web vital scores.

But unfortunately, most websites don’t do that.

2. 79% of Mobile Landing Pages Are Over 1MB in Page Size. (Google)

Google analyzed 11 million mobile ad landing pages spanning 213 countries.

The findings revealed that a significant portion of mobile pages were bloated, specifically 79%, had a size larger than 1MB. Additionally, 70% of the pages took more than five seconds for the visual content above the fold to display on the screen.

3. More Than 80% of All Websites Don’t Pass Core Web Vital Scores. (Gtmetrix)


GTmetrix analyzed their data for two years in a row 2021 and 2022, in which respectively 80.6% and 83.5% of the pages tested didn’t get a “Good” score for all three Web Vitals metrics, which are LCP, CLS, and TBT.

That’s a big chunk.


It could also mean an opportunity …

To get ahead of 80% of the websites.

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Right on, all the more reason to optimize your site!

Honestly, website speed is such a hidden gem …

4. More Than 50% of the Global Web Traffic Is Mobile. (Statista)

Mobile accounts for around 58.67% of global web traffic. According to Statista, mobile traffic has hovered near 50% since 2017, surpassing it in 2020.

In contrast, mobile makes up only 45.49% of online traffic in the United States.

5. Three-quarters of Shoppers Think They’re More Patient Than They Actually Are. (Unbounce)

Most people think they’re patient with slow websites, but in reality, if a page takes more than 3 seconds to load, they’ll probably leave. Turns out, nearly 70% of people say page speed affects whether they buy or not.

Also, Android users seem to be more patient than iOS users. Among those willing to wait 1-3 seconds for a page to load, 64% were using iOS devices, while just 36% used Android devices.

Even cool animations aren’t worth waiting for!

6. A Site Loading in 1 Second Gets 5 Times More Conversions Than one Loading in 10 Seconds. (Portent)

According to a study by Portent, For B2B sites, if your page loads in 1 second, you’re likely to get 3 times more conversions compared to sites that take 5 seconds. And if it loads in 1 second instead of 10, you could see 5 times more conversions!

In B2C e-commerce sites, a page loading in 1 second gets 2.5 times more conversions than one loading in 5 seconds. Even though the difference isn’t as big here, faster sites still tend to do better, with a 1.5x higher conversion rate when they load in 1 second instead of 10.

7. The Difference in Loading Speed Between the Fastest and Slowest Websites Can Reach as High as 30X. (Uptrends)

They checked out the top 50 tech news sites from Alexa and tested their homepage speed on mobile and desktop.

The difference between the fastest and slowest sites was massive – 27.4 seconds! The fastest site loaded in just 1.1 seconds, while the slowest took 28.5 seconds.

8. The Most Common Errors Are ”Http Error 403″ and Timeout (>30s). (Pingdom)

Followed by “HTTP Error 500”, “Required String Missing”, “No Additional Info” and “HTTP Error 401”.

On Average, there are 11K+ Outages Per hour at any given time.

9. Google Chrome Users Are Twice as Many as All Other Web Browsers Combined. (Statcounter)

Google Chrome dominates the web browser market, with a 65% share, followed by Safari at 18.55%.

Other browsers, including Microsoft Edge, Firefox, Samsung Internet, and Opera, have significantly smaller market shares, ranging from 5.03% to 2.53%.

Google also dominates the search engine market with a 91.37% share, followed by Bing at 3.37% and Yandex at 1.64%.

In the operating system market, Android leads with a 43.44% share. While Desktop devices account for the 1920×1080 screen size usage at 8.53%.

10. Bounce Rate Increases by 32% When Page Load Time Goes From 1 Second to 3 Seconds. (Thinkwithgoogle)

Bounce rate probability increases by:

  • 32% when page load time goes from 1 to 3 seconds
  • 90% when page load time goes from 1 to 5 seconds
  • 106% when page load time goes from 1 to 6 seconds
  • 123% when page load time goes from 1 to 10 seconds

11. Interaction to Next Paint (Inp) Replaces First Input Delay (Fid) as a New Core Web Vitals Metric in March 2024. (Searchcentral)

Interaction to Next Paint (INP) is a new Core Web Vitals metric that measures page responsiveness using the Event Timing API.

A low INP indicates the page consistently responds quickly to most user interactions.

For good page responsiveness, aim for an Interaction to Next Paint (INP) metric at or below 200ms. INP between 200-500ms needs improvement, while over 500ms indicates poor responsiveness.

12. A 1 Second Delay in Page Load Time Can Reduce User Satisfaction by 16%, and Perceived Credibility by 11%. (Researchgate)

The study titled:”The Illusion of Speed in Page Load Time” by Faniel, Jung, and Herbsleb (All Ph.D) examined a lot of metrics, among which was how perceived page speed affects user satisfaction, conversions, and credibility.

They found that a 1-second delay reduces user satisfaction by 16%, conversions by 7%, and perceived credibility by 11%.

13. The Average Desktop Page Load Time Is 2.5 Seconds. (Tooltester)

Desktop pages load in 2.5 seconds on average, while mobile takes 8.6 seconds – 70.9% longer.

Desktop First Input Delay averages 12.73ms, versus 59.73ms on mobile.

14. Around 27% of Service Providers Offer Speed Tiers for Smartphones. (Ericsson)

The Ericsson Mobility Report provides insights into the evolution of service providers’ offerings, revenue opportunities, and business transformation in the 5G era.

The report notes that around 27% of service providers offer speed-tiered plans for smartphones. This aligns with consumer preferences, as speed is often equated with quality.

Users value speed and are willing to pay more for it, so as a website owner you should definitely be looking at ways to optimize your mobile pages.


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