CLS: the change is more than 25 per cent.CLS: the change is between 10 and 25 per cent.CLS: the change is between 0 and 10 per cent.These values are divided into three categories: The evaluations refer to the values for “First Contentful Paint (FCP)”, “First Input Delay (FID)”, “Largest Contentful Paint (LCP)” and the “Cummulative Layout Shift (CLS)”.
The first piece of information is the field data from the CrUX, if available. Page speed: field data from the Chrome User Experience Report The history of these changes can be viewed on GitHub.Īdditionally, if you would like to find out how your site fares in comparison to other websites in terms of real user data, you can use our PageSpeed Test. The weightings have changed over time as the Lighthouse team regularly conducts research and collects feedback to understand what has the greatest impact on user-perceived performance. The weightings are chosen to provide a balanced representation of the user’s perception of performance. This tool can be used to calculate the PageSpeed score for any data collected by the user. The individual weightings are not visible in the Lighthouse report but can be viewed in the so-called “ Lighthouse Scoring Calculator“. This means that more heavily weighted metrics have a greater impact on the overall rating. This performance value is a weighted average of different metrics. This should help provide a rough assessment of your page’s performance. You can switch between the results for mobile and desktop views.Īs soon as Google has carried out the evaluation, the PageSpeed score is displayed on a scale from 0 to 100. the data gathered by Google’s Chrome User Experience Report (abbreviated CrUX), with the lab data about a page that is collected by Lighthouse. PageSpeed Insights combines the field data, i.e. What do Google PageSpeed Insights measure? The nice thing about it is that any URL can be entered and checked here. PageSpeed Insights is a Google tool that measures the loading time of a URL, calculates a score and analyses the website for potential improvements.