Google, we've found that a more accurate way to measure when the main content Performance Working Group and research done at Wrong-meaning they still do not identify when the main content of the page The initial paint, but these metrics are complex, hard to explain, and often In the past we've recommended performance metrics like First Meaningful PaintĪvailable in Lighthouse) to help capture more of the loading experience after If a page shows a splash screen or displays a loading indicator, this moment is Paint (FCP) only capture the very beginning of the loading experience. The Largest Contentful Paint (LCP) metric reports the render time of the largest Of a page is loaded is to look at when the largest element was rendered. When measured in the field and can lead to differences between field and lab Time To First Byte (TTFB) which can be significant Time from the previous page, connection set up time, redirect time, and Key Point: It is important to note that LCP includes any unload Viewport, relative to when the user first navigated to the page. Target for most of your users, a good threshold to measure is the 75th To provide a good user experience, sites should strive to have LargestĬontentful Paint of 2.5 seconds or less. The first frame of an animated image format, such as animated GIFs (as of August 2023).The first frame painted for autoplaying elements (as of August 2023).An element with a background image loaded via theĮlements containing text nodes or other inline-level text elements children.elements with a poster image (the poster image load time is used).Note: To learn more about the research and methodology behind this recommendation, see: Defining the Core Web Vitals metrics thresholdsĪs currently specified in the Largest Contentful PaintĬonsidered for Largest Contentful Paint are: Percentile of page loads, segmented across mobile and desktop devices. Note, restricting the elements to this limited set was intentional in order to keep things simple in the beginning. Elements that cover the full viewport, that are likely considered as background rather than content.Elements with an opacity of 0, that are invisible to the user.For Chromium-based browsers, these include: Additional elements (like the full support) may be added in the future as more research is conducted.Īs well as only considering some elements, certain heuristics are applied to exclude certain elements that are likely to be seen as "non-contentful" to users.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |