What is PLS by screen orientation
PLS by screen orientation shows how Perceived Load Speed (PLS) varies based on the screen’s orientation: portrait, landscape, or square.
Orientation influences how layouts render and how visual content is prioritized. For example, in landscape mode, a wider layout might cause more content to load above the fold — which can affect how fast the page feels, especially if large elements like hero images or sliders appear earlier or later depending on the orientation.
Healthy PLS by screen orientation sample
Should you worry
A healthy distribution shows consistent perceived load speed across orientations. Slight variation is expected, but large gaps suggest layout or responsiveness issues that impact the user experience on certain orientations — especially for mobile users rotating their phones.
If landscape or square orientations consistently show slower PLS, check whether your design adapts well or if elements shift unpredictably or load more slowly in those layouts.
Unhealthy PLS by screen orientation sample
Slower PLS in one orientation often points to layout shifts, delayed rendering of hero sections, or image loading priorities that differ between mobile views. For instance, in landscape, if the page stretches out and pushes key visuals below the fold, it can delay the moment when users feel the page has loaded — even if technically it's fast.
Resolving unhealthy PLS by screen orientation
Go-to action plan to resolve an unhealthy PLS by screen orientation:
Ask Uxi to analyze your PLS by screen orientation and suggest improvements.
Use Filters by screen orientation and combine with layout-based breakdowns like page type or device resolution to isolate the issue.
Simulate LCP of the suspected breakdown to see if fixing it will resolve the PLS by screen orientation. If yes, this is where the resolution focus should be.
Use an automated optimization tool like Navigation AI to improve your PLS by screen orientation.
Once you’ve improved PLS, set an alert to be the first to know if it starts worsening again.
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