1
At a glance the headline numbers for Lab paint timeline
Lab paint timeline on a cold crawl: TTFB, FCP, LCP in ms - setup-specific, not field data.
120ms
lab TTFB
on the typical page
367ms
lab FCP
on the typical page
559ms
lab LCP
on the typical page
94,841
sites measured
desktop field data
In the lab, the typical site paints its main content after 559ms.
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
2
Distribution & median INP site count and median INP at each level of lab paint timeline — ttfb
0ms 63ms 125ms 188ms 250ms
0 10957 21914
0 1–2 3–5 6–10 11–23 24–50 51–108 109–236 237–516 517–1126 1127–2458 >p98
Good (≤200ms) Needs improvement Poor (>500ms) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing INP by lab paint timeline — ttfb which level passes the INP most often
Lab paint timeline — ttfbSitesPassing INPINP
0 51 96% 44ms
1–2 106 97% 50ms
3–5 66 100% 54ms
6–10 37 83% 61ms
11–23 5,364 98% 50ms
24–50 21,914 99% 48ms
51–108 17,504 99% 49ms
109–236 15,564 99% 49ms
237–516 14,706 99% 49ms
517–1126 11,877 99% 49ms
1127–2458 5,757 99% 48ms
>p98 1,895 99% 49ms
Good Needs Improvement Poor Faded rows: under 100 sites
Lab paint timeline — ttfb 120ms. p75 413ms. p99 3.5s. At the low end (0ms): INP 44ms. At the high end (>p98): INP 49ms. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
4
Distribution & median INP site count and median INP at each level of lab paint timeline — fcp
0ms 63ms 125ms 188ms 250ms
0 9753 19505
55–85 86–131 132–203 204–313 314–483 484–746 747–1153 1154–1780 1781–2750 2751–4247 >p98
Good (≤200ms) Needs improvement Poor (>500ms) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
5
Passing INP by lab paint timeline — fcp which level passes the INP most often
Lab paint timeline — fcpSitesPassing INPINP
55–85 506 98% 44ms
86–131 5,432 99% 45ms
132–203 15,117 99% 47ms
204–313 19,505 99% 49ms
314–483 16,208 99% 50ms
484–746 13,064 99% 50ms
747–1153 9,933 99% 50ms
1154–1780 6,830 99% 50ms
1781–2750 3,764 99% 50ms
2751–4247 1,763 99% 50ms
>p98 1,880 98% 50ms
Good Needs Improvement Poor Faded rows: under 100 sites
Lab paint timeline — fcp 367ms. p75 765ms. p99 5.7s. At the low end (55–85ms): INP 44ms. At the high end (>p98): INP 50ms. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
6
Distribution & median INP site count and median INP at each level of lab paint timeline — lcp
0ms 63ms 125ms 188ms 250ms
0 9623 19245
26–46 47–81 82–144 145–255 256–450 451–796 797–1409 1410–2491 2492–4407 4408–7795 >p98
Good (≤200ms) Needs improvement Poor (>500ms) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
7
Passing INP by lab paint timeline — lcp which level passes the INP most often
Lab paint timeline — lcpSitesPassing INPINP
47–81 328 96% 48ms
82–144 4,472 99% 45ms
145–255 14,331 99% 46ms
256–450 19,245 99% 48ms
451–796 16,802 99% 49ms
797–1409 13,205 99% 51ms
1410–2491 8,327 98% 51ms
2492–4407 5,971 99% 50ms
4408–7795 5,639 99% 52ms
>p98 1,803 99% 54ms
Good Needs Improvement Poor Faded rows: under 100 sites
Lab paint timeline — lcp 559ms. p75 1.4s. p99 10.3s. At the low end (47–81ms): INP 48ms. At the high end (>p98): INP 54ms. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
8
Why this matters for the Core Web Vitals, and where to start fixing it
These are lab numbers from our crawler: one cold load, one machine, one network profile. They are not what your visitors feel. That is what the field data on the rest of this site measures. What the lab gives you is a controlled comparison: identical conditions for every site, so a difference between two sites is a real difference between the pages.
Read the gaps. Lab LCP far worse than field LCP usually means caching and repeat visits carry the field numbers. The reverse usually means the crawler's connection is kinder than your visitors' phones.
How does this affect the Core Web Vitals?
Passing INP barely moves across the range: 96% at one end, 99% at the other. This signal does not separate passing sites from failing ones.
Chrome field data from 94,910 sites, representing millions of real page loads. How we measured.