Core Web Vitals is a set of three metrics that have an impact on the actual user experience on the site. They define key aspects such as loading time, interactivity and stability of the load content. As officially announc, from May they will be add to the ranking factors of the Google algorithm. Core Web Vitals source sdeveloperssearchblog timing-for-page-experience Largest Contentful Paint (LCP) The first metric we are interest in is the LCP indicator, which measures page loading performance . This is the time it takes to render the largest piece of content or image display in the viewport after the user requests the URL.
To ensure a good user experience, the LCP should not exce . seconds . devlcp Elements affecting the LCP <img> elements, <image> elements inside <svg> element, <video> elements (video image is us), elements with a background load using the url() function, block or line elements containing text fragments. The item size is typically Japan WhatsApp Number List the size display to the user in the visible area. If an element extends beyond the visible area or any part is cropp, these fragments are not includ in the size of the element. For images that have been resiz relative to the original, a smaller value is return - the original size of the image or the resiz size. If the images have been shrunk from the original, the shrunk value will be return.