What is LCP by URL sample
LCP by URL sample shows how the Largest Contentful Paint (LCP) varies between URLs that are part of the Google Chrome User Experience Report (CrUX) and those that are not.
This lens helps you understand the quality of user experience on pages that are eligible for inclusion in Google's public dataset - a key factor in SEO and page experience ranking.
There are two categories:
Google CrUX – URLs that have sufficient traffic and are included in Google’s public CrUX dataset
Non Google CrUX – URLs that don’t qualify for CrUX due to low traffic or being excluded by Google for other reasons
Healthy "LCP by URL sample" sample
Should you worry
In a healthy scenario:
Google CrUX URLs show fast LCP — indicating strong real-world performance and alignment with Core Web Vitals
Non Google CrUX URLs perform similarly, suggesting overall good quality, even on long-tail or lower-traffic pages
When both categories are green, it’s a sign your site offers a consistent user experience - whether a URL is part of Google’s public dataset or not.
Unhealthy "LCP by URL sample" sample
If Google CrUX URLs show slow LCP:
These are your highest-traffic, most visible pages, and poor performance here affects SEO and user experience at scale
You may see higher bounce rates, lower rankings, and CrUX reports labeling your site as “Needs improvement”
If Non Google CrUX URLs are slower:
These pages may be under-optimized or neglected due to their lower traffic
Inconsistent performance can create frustration for returning users or affect growth as these URLs gain more exposure
Either way, a mismatch between the two can indicate uneven site quality.
Resolving unhealthy LCP by URL sample
Go-to action plan to resolve an unhealthy LCP by URL sample:
Ask Uxi to analyze your LCP by URL sample values and suggest improvements.
Use Filters to isolate problem pages - especially CrUX URLs with high pageviews and slow paints.
Simulate LCP of the suspected lens to see if fixing it will resolve the slow LCP by URL sample. If yes, this is where the resolution focus should be.
Use an automated LCP optimization tool like Navigation AI to improve your LCP by URL sample values.
Once you’ve improved LCP, 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.