nih.gov
LCP Largest Contentful Paint: how long until the biggest thing on the screen, usually the hero image or headline, has appeared. This is the number the club rule uses.
1.9s
Almost
Close. Shave 0.4 s to get in.
Real-user data from the Chrome UX Report, 75th percentile, mobile. Measured on https://www.nih.gov. Checked 2026-09-03.
FCP First Contentful Paint: how long until the first text or image shows up. The moment the page stops being blank.1.6 s
TTFB Time to First Byte: how long the server takes to start sending the page. Slow TTFB means slow hosting or heavy server work.849 ms
INP Interaction to Next Paint: how quickly the page reacts when you tap or click. Under 200 ms feels instant.95 ms
CLS Cumulative Layout Shift: how much the page jumps around while loading. 0 is perfect, under 0.1 is good.0.00
Desktop LCP The same Largest Contentful Paint, measured for real visitors on desktop browsers. The club rule uses the phone number.1.4 s
Six months of Mondays
Weekly p75, phone 75th percentile: three quarters of real visits were at least this fast that week.Fastest week 1.9 s · slowest 2.5 sDashed line: the 1.5 s rule
Club history
Joined and kickedNothing yet. The first weekly recheck writes the first line here.
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<a href="https://instantly.fyi/nih.gov"><img src="https://instantly.fyi/badge/nih.gov.svg" alt="instantly.fyi: 1.9 s ✗" width="137" height="20"></a>
[](https://instantly.fyi/nih.gov)
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