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How can you reduce layout shift to improve Core Web Vitals?
Asked on Oct 19, 2025
Answer
Reducing layout shift is crucial for improving Core Web Vitals, specifically the Cumulative Layout Shift (CLS) metric, which measures visual stability. This can be achieved by ensuring that elements on a page load predictably and do not move unexpectedly during rendering.
Example Concept: To minimize layout shift, reserve space for images and ads using width and height attributes or CSS aspect ratio boxes. Load fonts asynchronously or use font-display: swap to prevent text shifts. Ensure that dynamic content, such as ads or embeds, does not push other content around by allocating space in advance.
Additional Comment:
- Use CSS Grid or Flexbox to create stable layouts that adapt to content changes without shifting.
- Preload important resources to ensure they are available when needed, reducing unexpected shifts.
- Monitor CLS using tools like Google Lighthouse or Chrome DevTools to identify and fix issues.
- Consider using a content delivery network (CDN) to speed up resource loading and reduce delays.
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