Core Web Vitals are a set of field metrics that measure important aspects of real-world user experience on the web such as loading, interactivity, and visual stability. The assessment is based on three core metrics:
- Largest Contentful Paint (LCP): measures loading performance. To provide a good user experience, LCP should occur within 2.5 seconds of when the page first starts loading.
- First Input Delay (FID): measures interactivity. To provide a good user experience, pages should have an FID of 100 milliseconds or less.
- Cumulative Layout Shift (CLS): measures visual stability. To provide a good user experience, pages should maintain a CLS of 0.1. or less.
To pass the assessment, a page should meet the recommended targets at the 75th percentile for all of the above three metrics.
How to resolve it: #
Refer to the file shared by the RankChutney team for the pages to focus on and forward this file to your developer to resolve the issues.
Tools for more details: #
Google believes that the Core Web Vitals are critical to all web experiences. As a result, it is committed to surfacing these metrics in all of its popular tools. The following section details which tools support the Core Web Vitals.
Page Speed Insights https://pagespeed.web.dev/
For guidance on how to use these tools, and which tool is right for your use case, see:
Getting started with measuring Web Vitals