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Grade your website's performance and Core Web Vitals for SEO.
Analyze your site's performance and Core Web Vitals to improve SEO rankings.
Core Web Vitals Grader measures LCP, FID, and CLS using the PageSpeed API to grade your website's performance.
Page speed is a major SEO ranking factor. Analyze your LCP, FID, and CLS scores instantly.
Enter your URL.
Select Mobile or Desktop.
Review your vitals.
Data is retrieved from the Google PageSpeed Insights API. The tool evaluates field and lab data for Core Web Vitals (LCP, FID, CLS) and categorizes performance as Good, Needs Improvement, or Poor based on Google's official thresholds.
Largest Contentful Paint should occur within 2.5 seconds of when the page first starts loading.
Google uses Core Web Vitals as a ranking signal for search results.