How to Solve CLS Issues in Blogger Templates (Core Web Vitals 2025)

With Google's Core Web Vitals update coming in 2025, having a fast and user-friendly website is more crucial than ever. One of the key factors affecting your site's performance is
Cumulative Layout Shift (CLS), a metric that measures the stability of your webpage's layout.

Are you struggling with CLS issues on your Blogger template? You're not alone. Many website owners are unaware of the impact CLS has on their site's overall user experience and search engine ranking.

This article will guide you through the process of identifying and fixing CLS issues in your Blogger
template, ensuring your website is optimized for the upcoming Core Web Vitals 2025 update.

Key Takeaways

Understand the importance of CLS in Core Web Vitals
Learn how to identify CLS issues in your Blogger template
Discover effective methods to fix CLS issues
Optimize your website for the 2025 Core Web Vitals update
Improve your website's overall user experience and search engine ranking

Understanding CLS and Core Web Vitals 2025

In the realm of Core Web Vitals 2025, Cumulative Layout Shift (CLS) stands out as a critical factor in enhancing your Blogger site's performance. Core Web Vitals are a set of metrics designed to measure
the user experience on the web, and CLS is one of the key indicators. It measures the visual stability of a webpage, quantifying how much the content shifts during the loading process.

What is Cumulative Layout Shift and Why It Matters

Cumulative Layout Shift (CLS) occurs when elements on a webpage shift or move around during
loading, often due to images or ads loading at different times. This can be frustrating for users,
especially on mobile devices. A high CLS score can negatively impact your site's usability and search
engine rankings. Improving CLS is essential for blogger template optimization, as it directly affects how users interact with your site.

How CLS Affects Your Blogger Site's Performance

A poor CLS score can lead to a higher bounce rate, as users may become frustrated with the shifting
content. Moreover, search engines like Google consider CLS in their ranking algorithms, meaning a low CLS score can improve your site's visibility. Enhancing your site's CLS score is crucial for maintaining a competitive edge.

Tools to Measure Your Current CLS Score

To measure your CLS score, you can use tools like Google PageSpeed Insights, Lighthouse, or Web
Vitals. These tools provide insights into your site's performance and offer recommendations for
improvement. Regularly monitoring your CLS score is vital for ensuring your Blogger site remains
optimized and user-friendly.

How to Solve CLS Issues in Blogger Templates

Optimizing your Blogger site for Core Web Vitals involves addressing CLS issues head-on with effective techniques. Cumulative Layout Shift (CLS) can significantly impact user experience
and search engine rankings. By applying some straightforward fixes, you can improve your site's
performance.

Setting Explicit Width and Height for Images

One of the simplest ways to reduce CLS is by setting explicit width and height attributes for images.
This allows the browser to allocate the necessary space before the image loads, preventing layout shifts.For example, you can modify your image tags to include width and height attributes: <img src="image.
jpg" width="800" height="600">. This straightforward approach can make a significant difference in
your site's CLS score.

Fixing Font Loading Problems

Fonts can cause significant layout shifts if not loaded properly. To mitigate this, consider using
fontdisplay: swap; in your CSS. This property allows the browser to display a fallback font until the
desired font is loaded, reducing CLS. Additionally, using a font loading strategy like preloading can
help minimize layout shifts.

Optimizing Third-Party Widgets and Ads

Thirdparty widgets and ads can be a major source of CLS. To optimize them, ensure that you reserve
space for these elements by wrapping them in a container with a fixed height or aspect ratio. This
prevents the layout from shifting when the content loads. For instance, you can use CSS to set a
minimum height for ad containers.

Optimization Technique	Impact on CLS
Setting explicit image dimensions	High
Fixing font loading issues	Medium
Optimizing third-party widgets and ads	High

Addressing Dynamic Content Layout Shifts

Dynamic content, such as infinite scroll or lazy-loaded elements, can cause layout shifts. To address this, use techniques like reserving space for
dynamic content or using CSS containment. By containing the layout, you can prevent shifts caused by dynamic elements.

Implementing CSS Containment Techniques

CSS containment is a powerful tool for reducing CLS. By applying contain: layout; or contain: paint; to elements that are likely to change, you can isolate their layout and prevent shifts. This is particularly useful for complex or dynamic components.

By implementing these strategies, you can significantly improve your Blogger site's CLS score,
enhancing both user experience and search engine rankings. Regularly monitoring your site's
performance and adjusting your techniques as needed is key to maintaining a high level of optimization.

Testing and Maintaining Good CLS Scores

To keep your Blogger website performing well, it's essential to test and maintain good CLS scores
regularly. Cumulative Layout Shift (CLS) is a critical metric that affects user experience and search
engine rankings. By regularly monitoring and optimizing CLS, you can ensure your site remains
competitive and user-friendly.

Regular Performance Monitoring Methods

Regular performance monitoring is crucial for maintaining good CLS scores. Utilize tools like Google
PageSpeed Insights and Lighthouse to regularly check your site's performance. These tools provide
insights into CLS and other Core Web Vitals metrics, helping you identify areas for improvement.

Key monitoring methods include:

Regularly checking CLS scores using Google PageSpeed Insights
Using Lighthouse for comprehensive audits
Monitoring real-user experiences with tools like Google Analytics

Mobile vs. Desktop CLS Considerations

CLS can vary significantly between mobile and desktop devices due to differences in screen sizes and
loading patterns. Ensure you test your site on both mobile and desktop to get a comprehensive view of
your CLS scores. Optimizing for both is crucial, as user experiences differ across devices.

Future-Proofing Your Template for Core Web Vitals 2025

As Core Web Vitals continue to evolve, future-proofing your Blogger template is essential. Stay updated with the latest best practices and guidelines
from Google. Implementing flexible, adaptive designs will help your site remain compliant with future Core Web Vitals standards.

By staying proactive and adapting to changes, you can ensure your Blogger site remains optimized for
performance and user experience.

Conclusion

Addressing Cumulative Layout Shift (CLS) issues in Blogger templates is crucial for achieving good
Core Web Vitals scores in 2025. By implementing the strategies discussed, such as setting explicit widthand height for images, fixing font loading problems, and optimizing third-party widgets and ads, you can significantly enhance your site's user experience and search engine
ranking.

Regularly monitoring your site's performance and adapting to the evolving Core Web Vitals guidelines will help you stay ahead of the competition. By following the steps outlined in this article on how to
solve CLS issues in Blogger templates, you can improve your site's CLS score and overall Core Web Vitals performance.

Maintaining a good CLS score is essential for providing a seamless user experience and ensuring your
site remains competitive in the ever-changing digital landscape of Core Web Vitals 2025.