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SEO Glossary: Core Web Vitals Explained
Google's ranking algorithm prioritizes user experience (UX) signals. Understanding these metrics is key to improving your site's SEO performance. Here is a breakdown of the technical terms you'll see in your report.
LCP (Largest Contentful Paint)
Measures loading performance. It marks the point when the main content of the page has likely loaded. A good LCP score is 2.5 seconds or less.
CLS (Cumulative Layout Shift)
Measures visual stability. It quantifies how much elements move around while the page is loading. A good CLS score is 0.1 or less.
FID (First Input Delay)
Measures interactivity. It tracks the time from when a user first interacts with a page (e.g., clicks a link) to the time the browser is able to respond. A good FID is 100ms or less.
TTFB (Time to First Byte)
The time it takes for a browser to receive the first byte of page content. This helps identify slow server response times.
SEO Best Practices Checklist
- Mobile-First Design: Ensure your site is fully responsive. Google predominantly uses the mobile version of the content for indexing and ranking.
- HTTPS Security: A secure connection (SSL certificate) is a ranking signal and builds trust with users.
- Optimized Images: Compress images and use modern formats like WebP to improve load times without sacrificing quality.
- Descriptive Meta Tags: Write unique titles and meta descriptions for every page to improve Click-Through Rate (CTR) from search results.