Web vitals
Reignat can collect real-user performance signals from the same tracking script.
What is collected
The tracker captures Core Web Vitals and related browser performance timings when the browser supports them.
CLSnumber
Cumulative Layout Shift, rounded to three decimal places.
FCPmilliseconds
First Contentful Paint.
LCPmilliseconds
Largest Contentful Paint.
TTFBmilliseconds
Time to First Byte from the navigation timing entry.
INPmilliseconds
Interaction to Next Paint approximation from event timing samples.
How it sends
Web vitals are sent as vitals events after the page has had time to settle, and again on page hide when needed.
ℹ
Some metrics may be null if the browser does not expose the required performance API or the page closes before a metric is available.
Where to use it
Use the Performance view to find slow pages, compare browser or OS segments, and spot countries where real-user experience is worse than expected.