Please note that we have used TBT instead of FID in the Semrush audit tool , as Google prefers to use TBT as a more effective metric for comparison and optimization. Please refer to Google's FID optimization for more details.
The study was conducted using "laboratory" data, meaning we did not collect real data from .
The data shown is for a single page, not the entire website. This is important because Core Web Vitals are metrics for pages, not the website. And it is crucial to understand whether the metrics are "ok" or not for a specific page.
The research was conducted before the metrics affected results vietnam mobile database in the June update. With this data, SEO specialists and website owners can prepare their sites for the update.
Table of contents
Main findings of the study
Methodology
What are Core Web Metrics?
Why Core Web Metrics Matter
Results of the study
Mobile vs Desktop
Practical tips for optimizing a website
What are Core Web Vitals?
Core Web Vitals are a set of three individual metrics that fall within the overall experience of a page:
LCP - Largest Contentful Paint : Rendering of the largest contentful element
CLS - Cumulative Layout Shit : Cumulative layout changes
FID - First Input Delay : Delay of the first input.
They are a group of signals that Google will measure to evaluate the user experience on the page.
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LCP- Largest Contentful Paint
The Largest Contentful Paint, or LCP, measures the loading speed and performance of a web page. Google says that LCP should occur within the first 2.5 seconds of the page starting to load for optimal loading speed.