What is LCP by HTTP status code
LCP by HTTP status code shows the Largest Contentful Paint (LCP) varies based on the HTTP status code returned by the server during page load. These status codes (e.g., 200, 301, 404) can significantly affect how quickly the browser is able to deliver the largest visible content element to the user.
This lens helps you uncover whether certain responses are causing slower load experiences — often due to redirects, missing resources, or fallback error pages.
Healthy LCP by HTTP status code sample
Should you worry
A healthy lens shows that the vast majority of fast LCP experiences occur on 200 (OK) status pages, indicating clean, direct responses with minimal interference. If 3xx or 4xx status codes are rare and green, that’s a good sign of a well-optimized routing and error-handling strategy.
Unhealthy LCP by HTTP status code sample
An unhealthy distribution may show:
Many redirects (3xx) before landing on the final page, introducing avoidable latency.
High 404 or 500 rates with large LCP times, meaning fallback or error pages are heavy or not optimized.
A notable share of non-200 traffic pulling down the site’s overall performance profile.
These delays can frustrate users, especially if they’re not expecting multiple hops or unclear error feedback.
Resolving unhealthy LCP by HTTP status code
Go-to action plan to resolve an unhealthy LCP by HTTP status code:
Ask Uxi to analyze your LCP by HTTP status code values and suggest improvements.
Use Filters to isolate specific routes or templates where non-200 statuses impact performance.
Simulate LCP of the suspected lens to see if fixing it will resolve the slow LCP by HTTP status code. If yes, this is where the resolution focus should be.
Use an automated LCP optimization tool like Navigation AI to improve your LCP by HTTP status code values.
Once you’ve improved LCP, set an alert to be the first to know if it starts worsening again.
Try it yourself
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