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“The need for speed” for your websites



Do you know that faster websites generate more money?

When you improve the speed of your web , you are able to improve your conversion rate as well. By article Speed up your website a one second delay in page load time yields:

  • 11% fewer page views
  • 16% decrease in customer satisfaction
  • 7% loss in conversions

Need For Speed



Every extra second of loading time has a negative bounce on ability to engage your customers, produces less businesses and costs you more money. And of course nobody likes slow websites :) Remember, your feelings, when the loading time of the web site was really poor, what did you do? :-)

For example at Zalando, they tested how artificially increasing the loading time on Catalog pages affected bounce rates, conversion rates, and revenue per user. The results were clear. A 100 milliseconds page load time improvement led to increased engagement with lower bounce rate and a 0.7% uplift in revenue per session. More information you can find in this article How Zalando reduced performance feedback time from 1 day to 15 minutes with Lighthouse CI

Another beautiful example is Bibli - How they achieved a 42% reduction in bounce rate, an 8x improvement in mobile conversion rate, and 2.5x more pages per session you can read here Blibli's PWA generates 10x more revenue per user than their previous mobile website

By statistics from Google, which collect data about the speed and traffic of websites, most users (53 %) leave the web if it does not load within three seconds. He also states that you have a 24% better chance that the users remains on the site if it meets the Web Vitals. The business impact of Core Web Vitals

Do you know that Google, who supports 81 % of searches, prefers faster pages in their search results and it is happening more and more often.

Do not forget that the speed of your web is really important for your business.



Michaela Egedová, Performance Evangelist
October 2021

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