What is LCP by data save mode
LCP by data save mode shows the Largest Contentful Paint (LCP) segmented by whether users have enabled their browser or device’s Data Save mode.
This lens helps identify if users who enable data-saving settings are experiencing better or worse LCP — and whether your site adapts well to those constraints.
Healthy LCP by data save mode sample
Should you worry
In a healthy setup:
LCP is reasonably fast for both enabled and disabled users
Data Saver users may even see slightly better LCP, due to leaner resource loads
The experience is consistently smooth, regardless of the user's setting
This suggests your site gracefully supports lighter versions or handles missing enhancements without penalty - a mark of resilient front-end engineering.
Unhealthy LCP by data save mode sample
If Data Saver users experience significantly worse LCP, it often means:
Critical content is deferred or blocked in low-data settings
JavaScript dependencies may break or degrade layout when savings kick in
Images aren't optimized properly, or essential assets rely on CDNs that bypass compression
This results in a sluggish or broken experience for users specifically trying to save data — likely mobile-first, international, or budget-conscious segments.
Resolving unhealthy LCP by data save mode
Go-to action plan to resolve an unhealthy LCP by data save mode:
Ask Uxi to analyze your LCP by data save mode values and suggest improvements.
Use Filters to focus specifically on enabled Data Saver sessions, then explore other LCP lenses (like device, connection type, or redirects) to spot overlapping performance issues.
Simulate LCP of the suspected lens to see if fixing it will resolve the slow LCP by data save mode. If yes, this is where the resolution focus should be.
Use an automated LCP optimization tool like Navigation AI to improve your LCP by data save mode 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.