Cumulative Layout Shift (CLS)
Core Web Vital measuring visual stability by tracking unexpected layout shifts, should be under 0.1.
Definition
Core Web Vital measuring visual stability by tracking unexpected layout shifts, should be under 0.1.
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
Related Topics
Largest Contentful Paint (LCP)
Core Web Vital measuring how long it takes for the largest content element to appear, should be under 2.5s.
Slow Largest Contentful Paint (LCP)
Pages that load slowly harm user experience, SEO rankings, and conversion rates. LCP over 2.5s fails Core Web Vitals.
Audit Ecommerce Checkout Flow
Identify usability and accessibility issues in your checkout process that cause cart abandonment and lost revenue.
For Frontend Developers
Catch accessibility and UX bugs before code review, integrate quality checks into your workflow.
Ready to improve your UX?
Run a free audit to identify issues related to cumulative layout shift (cls).
Try VertaaUX Free