PageSpeed Insights by Google measure the speed a web page loads for mobile and desktop devices.It analyzes the URL of your website twice: once for mobile and once for desktop.
The PageSpeed Score is very important. The higher your score, the better your website in the search engine’s eyes. A score of 85 and up is very good; it means that your site is performing well. But a low score means as low loading website and pages; this can lead to low user engagement, increased bounce rates, and low average time spent on a page.
Anyone can test their web pages for free with Google’s PageSpeed Insights.
In the past few years,Google has invested millions of dollars on PageSpeed. So that’s a sign you should make any changes they suggest. Here’s the bottom line: A fast website = better user experience = better search results.