What is INP by browser language
INP by browser language shows the Interaction to Next Paint (INP) segmented by the language preference configured in users’ browsers — such as en-US
, ja-JP
, or fr-FR
.
While language alone doesn’t cause interaction delays, it often correlates with:
Different content versions (localized layouts, copy)
Different third-party scripts or tracking
Regional device and browser patterns
Only languages with real visits during the selected time range are displayed.
This lens is a privacy-friendly way to surface regional or localization-driven input issues, even without detailed geo data.
Healthy INP by browser language sample
Should you worry
A healthy chart shows green INP across all major languages. That indicates:
Input handling is performant regardless of localized layout or translation.
No client-side interaction logic is being delayed by language-specific content or logic.
There’s no region-specific latency after interaction (e.g. slow autocomplete, delayed click-to-expand).
You might still see slight variance across languages — that’s fine, as long as the baseline remains green.
Unhealthy INP by browser language sample
When certain languages spike in INP, the culprits often include:
Heavier translated content, leading to delayed paints after interaction.
Localized scripts (e.g. chatbots, A/B testing tools) that trigger on user action and bog down input responsiveness.
Language-specific layout changes (e.g. longer CTA text or vertical stacking in RTL languages) that slow down DOM updates.
Client-side translation overlays injecting latency.
Think of this lens as a signal that your multilingual logic might be affecting interactivity.
Resolving unhealthy INP by browser language
Go-to action plan to resolve an unhealthy INP by browser language:
Ask Uxi to analyze your INP by browser language values and suggest improvements.
Filter with device type, browser, and region to isolate patterns.
Simulate INP of the suspected lens to see if fixing it will resolve the INP by browser language. If yes, this is where the resolution focus should be.
Use an automated INP optimization tool like INProve to improve your INP by browser language values.
Once you’ve improved INP, 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.