What is LCP by device
LCP by device shows the Largest Contentful Paint (LCP) value across different device types (e.g. Mobile or Desktop). This lens helps you identify which devices deliver a slower experience for your users.
The list shows only device types that generated traffic to your website during the selected period.
Common reasons for slower LCP on certain devices include less capable hardware (such as older phones) and heavy use of JavaScript on the page — or a combination of both.
LCP is the most popular vital from the Core Web Vitals and represents the loading time of the largest element on the page.
Healthy LCP by device sample
Should you worry
A healthy LCP by device lens looks all green. Some devices may be greener than others, but as long as there's no yellow or red, it’s considered healthy. The greener the device, the better.
Unhealthy LCP by device sample
In the example below, LCP by device shows that Desktop is both the most popular and the slowest device type. This often leads to a higher bounce rate, more exits, and lower conversion rates.
Resolving unhealthy LCP by device
Go-to action plan to resolve an unhealthy LCP by device:
Ask Uxi to analyze your LCP by device values and suggest improvements.
Use Filters to focus on the slow device in your LCP by device, then look across the other LCP lenses to find which ones show the slowest LCPs with the most pageviews.
Simulate LCP of the suspected lens to see if fixing it will resolve the slow LCP by device. If yes, this is where the resolution focus should be.
Use an automated LCP optimization tool like Navigation AI to improve your LCP by device 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.