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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.
4.2s
Not in the club
Not even close. Real users wait 4.2 s.
Real-user data from the Chrome UX Report, 75th percentile, mobile. Checked 2026-09-04.
FCP First Contentful Paint: how long until the first text or image shows up. The moment the page stops being blank.2.1 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.1,190 ms
INP Interaction to Next Paint: how quickly the page reacts when you tap or click. Under 200 ms feels instant.392 ms
CLS Cumulative Layout Shift: how much the page jumps around while loading. 0 is perfect, under 0.1 is good.0.04
Desktop LCP The same Largest Contentful Paint, measured for real visitors on desktop browsers. The club rule uses the phone number.3.0 s
Page weight Total bytes downloaded in a lab test of the homepage.0.1 MB
Requests Number of files the page fetched in the lab test.5
Third-party Requests to other companies' servers: analytics, ads, chat widgets. Usually the first thing to cut.4
Lighthouse Google Lighthouse performance score out of 100 from the lab run. A lab opinion, not a real-user measurement.97
Lab run on PageSpeed Insights, mobile. One load on one machine, not real users.
Six months of Mondays
Weekly p75, phone 75th percentile: three quarters of real visits were at least this fast that week.Fastest week 4.1 s · slowest 9.8 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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