What is CLS by U-turns
CLS by U-turns shows how Cumulative Layout Shift (CLS) differs for users who make a U-turn compared to those who stay and interact with the page.
A U-turn occurs when a user lands on a page, stays for five seconds or less, doesn’t interact (no clicks, scrolls, or inputs), and then navigates back to the previous page. It’s a signal that something didn’t resonate — or possibly didn’t render properly.
This breakdown helps you understand whether unstable layouts are contributing to users leaving before they engage. Since CLS represents unexpected shifts of visible elements, a poor CLS may cause frustration and early exits.
CLS by U-turns sample
In a healthy view, CLS values for U-turn sessions look similar to non-U-turn sessions. Users may still leave quickly, but it’s not because the page layout moved around after loading.
A healthy setup typically shows:
CLS consistently green (<0.1) across both groups.
No sudden layout movements as content loads.
Reserved space for ads, images, and embeds to prevent shifts.
If CLS remains stable and low, U-turns are more likely tied to content relevance or user intent — not performance.
Unhealthy CLS by U-turns
If U-turn sessions consistently show higher CLS values, layout instability may be pushing users away before they interact.
Common causes include:
Images or ads without fixed dimensions pushing content down.
Fonts swapping late and causing text reflow.
Third-party widgets or banners loading unpredictably.
Dynamic containers shifting key elements below the fold.
In this case, the U-turn isn’t just about intent — it’s about frustration with an unstable page.
Resolving unhealthy CLS by U-turns
Go-to action plan to resolve an unhealthy CLS by U-turns:
Ask Uxi to analyze your CLS by U-turns values and suggest improvements
Use Filters to compare CLS between U-turn and non-U-turn sessions by device or traffic source.
Simulate CLS of the suspected breakdown to see if fixing it will resolve the CLS by U-turns. If yes, this is where the resolution focus should be.
Use an automated CLS optimization tool like Navigation AI to improve your CLS by U-turns values
Once you’ve improved CLS, set an alert to be the first to know if it starts worsening again.
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