What is CLS by URL sample
CLS by URL sample shows how Cumulative Layout Shift (CLS) varies between URLs included in the Google Chrome User Experience Report (CrUX) and those that aren’t.
This lens helps you assess whether Google’s public-facing view of your site aligns with your broader site quality. CrUX inclusion affects SEO and reflects how Chrome users experience your most visited pages.
Two categories:
Google CrUX – URLs with enough traffic to appear in Google's CrUX dataset
Non Google CrUX – Lower-traffic URLs or those excluded for other reasons
Healthy "CLS by URL sample" sample
In a healthy scenario:
Google CrUX URLs show low CLS — meaning your most visible pages meet layout stability standards
Non Google CrUX URLs also perform well, indicating that even lower-traffic or niche content offers a smooth experience
Performance is consistently green, whether or not Google tracks it publicly
This suggests your layout practices scale well across the site, regardless of visibility or traffic volume.
Unhealthy "CLS by URL sample" sample
If Google CrUX URLs have high CLS:
These are the most SEO-impactful pages — unstable layout here affects rankings and reputation
You might see CrUX labeling your site as “Needs improvement”, impacting Core Web Vitals compliance
If Non CrUX URLs show poor CLS:
These pages may be under-maintained — often ignored due to low visibility
Still, they matter to returning users, long-tail SEO, or when traffic patterns shift
A gap between CrUX and Non-CrUX stability can point to uneven site quality — a sign to revisit layout practices across the board.
Resolving unhealthy CLS by URL sample
Go-to action plan to resolve an unhealthy CLS by URL sample:
Ask Uxi to analyze your CLS by URL sample values and suggest improvements
Use Filters to narrow down affected pages — prioritize CrUX pages for impact, but don’t ignore the rest.
Simulate CLS of the suspected lens to see if fixing it will resolve the CLS by URL sample. If yes, this is where the resolution focus should be.
Use an automated CLS optimization tool like Navigation AI to improve your CLS by URL sample values
Once you’ve improved CLS, set an alert to be the first to know if it starts worsening again.
Try it yourself
Discover how your website performs with real user data.