Cumulative Layout Shift (CLS)
Core Web Vital measuring visual stability by tracking unexpected layout shifts during page load. A CLS score under 0.1 indicates a stable experience.
Definition
Core Web Vital measuring visual stability by tracking unexpected layout shifts during page load. A CLS score under 0.1 indicates a stable experience.
Why It Matters
Understanding this concept is crucial for implementing accessible, user-friendly interfaces that comply with web standards.
Examples
Common real-world implementations and usage patterns for this concept.
Best Practices
- Follow WCAG guidelines when applicable
- Test with assistive technologies
- Document your implementation decisions
On This Page
Related Topics
Largest Contentful Paint (LCP)
Core Web Vital measuring how long it takes for the largest content element to render on screen. Should be under 2.5 seconds for good user experience.
Slow Largest Contentful Paint (LCP)
Pages that load slowly harm user experience, SEO rankings, and conversion rates. An LCP over 2.5 seconds fails Core Web Vitals assessment.
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