Core Web Vitals Metrics
Core Web Vitals are a set of specific metrics introduced by Google to measure user experience (UX) quality. They are not just loose statistics – they are official ranking factors.
Sites failing to meet the strict requirements of these three metrics may be blocked from reaching the first page of search results, regardless of how excellent their offer is.
Here is the holy trinity of technical SEO that your developer must focus on:
- LCP (Largest Contentful Paint): Measures how quickly the largest visual element (e.g., the main image or headline) appears on the screen. Google's gold standard is under 2.5 seconds.
- CLS (Cumulative Layout Shift): Evaluates visual "stability". If text suddenly jumps during loading (e.g., because an image loaded without set dimensions), this metric drops drastically.
- INP (Interaction to Next Paint): A new metric testing responsiveness. It measures the latency of how quickly a page responds from the moment a user clicks a button or link.
Clean code from otterStudio that bypasses slow templates is a guarantee of perfect results in these tests. We also highly recommend reviewing the impact of speed on sales to realize the true value of fractions of a second in e-commerce.