Google's introduction of LCP subparts aims to enhance website performance by providing detailed insights into page load delays. The Largest Contentful Paint (LCP) measures the time it takes for the largest content element to become visible to users. With LCP subparts, such as Time to First Byte and Resource Load Delay, website owners can more easily pinpoint bottlenecks that could degrade user experience and affect search rankings. This new capability, reflected in the Chrome UX Report, enhances measurement strategies to improve site speed and overall visitor satisfaction.
The Largest Contentful Paint (LCP) in Core Web Vitals measures how quickly a website loads from a visitor's perspective.
LCP subparts split the Largest Contentful Paint metric into four different components: Time to First Byte, Resource Load Delay, Resource Load Time, and Element Render Delay.
Google has been working to address that recently by introducing LCP subparts, which tell you where page load delays are coming from.
When trying to fix LCP issues, it's not always clear what to focus on.
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