What is LCP by browser language
LCP by browser language shows the Largest Contentful Paint (LCP) segmented by the language preference set in users’ browsers. For example: en-US, es-ES, fr-FR, de, and many others.
This lens helps you detect whether your localized experiences are impacting performance. Language settings often correlate with geo, localization logic, and even region-specific third parties or content, all of which can influence load speed.
Only browser languages with actual visits during the selected period will appear.
🌍 Keep in mind: browser language does not guarantee geographic location, but it’s a privacy-friendly proxy that often overlaps with regional patterns.
Healthy LCP by browser language sample
Should you worry
In a healthy scenario, most or all languages show green LCP bars, meaning your site loads quickly regardless of the user’s preferred language.
Unhealthy LCP by browser language sample
If a specific language (say, en-IN) shows consistently slower LCP, it might be caused by:
Dynamic content injection during localization.
Late-loading language-specific assets (fonts, images, text).
Server-side rendering delays for certain locales.
Third-party scripts or integrations tied to that language group (e.g. region-specific ads or plugins).
Fallback rendering for unsupported or poorly managed translations.
Resolving unhealthy LCP by browser language
Go-to action plan to resolve an unhealthy LCP by browser language:
Ask Uxi to analyze your LCP by browser language values and suggest improvements.
Use Filters to drill into those segments and cross-reference with redirects, server distance, or third-party impact.
Simulate LCP of the suspected lens to see if fixing it will resolve the slow LCP by browser language. If yes, this is where the resolution focus should be.
Use an automated LCP optimization tool like Navigation AI to improve your LCP by browser language 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.