Case Studies on CLS Improvement and SEO Results

A notable case study on Cumulative Layout Shift (CLS) improvement and its SEO impact is from The Telegraph Media Group (TMG). They addressed CLS issues caused primarily by dynamic ad placements that shifted page layout during loading. By standardizing ad sizes and reserving fixed space for ads, they significantly reduced CLS. Additionally, they optimized loading of images, headers, and embedded content. These changes improved their CLS score by 250%, which led to better Google search rankings due to Google's Core Web Vitals update and enhanced user experience, resulting in increased organic traffic and longer visitor engagement on their site.

Key takeaways from this case include:

• Standardizing ad dimensions to prevent unexpected layout shifts.
• Reserving space for dynamic content like ads and embeds before they load.
• Optimizing image and content loading to minimize layout changes during page render.
• Improved CLS directly contributed to higher search rankings and better user retention, which positively affected advertising revenue.

In general, CLS improvements are critical for SEO because Google incorporates Core Web Vitals, including CLS, into its ranking algorithm. Websites that reduce CLS tend to rank higher and provide better user experiences, which can increase traffic and conversions.

While there are no specific SEO case studies from the Philippines in the search results, the principles and strategies demonstrated by TMG are broadly applicable to any website aiming to improve CLS and SEO outcomes.

If you want, I can also provide technical best practices for fixing CLS based on common causes such as missing image dimensions and dynamic content loading.