In the lab, the typical site paints its main content after 556ms

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.

114ms

lab TTFB

on the typical page

366ms

lab FCP

on the typical page

556ms

lab LCP

on the typical page

185,133

sites measured

all-device field data

In the lab, the typical site paints its main content after 556ms.

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices 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

200ms

0 20656 41312

0 1–2 3–5 6–10 11–23 24–49 50–107 108–233 234–507 508–1104 1105–2404 >p98

Good (≤200ms) Needs improvement Poor (>500ms) Site count

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices 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 3,381 93% 87ms

1–2 1,079 93% 87ms

3–5 156 97% 88ms

6–10 73 95% 88ms

11–23 9,689 92% 86ms

24–49 41,312 93% 85ms

50–107 34,133 94% 86ms

108–233 29,608 95% 86ms

234–507 27,860 96% 86ms

508–1104 22,819 97% 88ms

1105–2404 11,392 97% 88ms

>p98 3,631 95% 90ms

Good Needs Improvement Poor Faded rows: under 100 sites

Lab paint timeline — ttfb 114ms. p75 399ms. p99 3.4s. At the low end (0ms): INP 87ms. At the high end (>p98): INP 90ms. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices 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

200ms

0 20358 40715

47–75 76–120 121–191 192–305 306–488 489–779 780–1243 1244–1985 1986–3169 3170–5060 >p98

Good (≤200ms) Needs improvement Poor (>500ms) Site count

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices 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

47–75 465 85% 94ms

76–120 8,318 89% 80ms

121–191 28,433 94% 82ms

192–305 40,715 95% 85ms

306–488 33,414 95% 87ms

489–779 26,520 96% 87ms

780–1243 19,573 95% 89ms

1244–1985 12,485 96% 89ms

1986–3169 6,378 96% 90ms

3170–5060 3,537 95% 88ms

>p98 3,670 94% 88ms

Good Needs Improvement Poor Faded rows: under 100 sites

Lab paint timeline — fcp 366ms. p75 776ms. p99 10.2s. At the low end (47–75ms): INP 94ms. At the high end (>p98): INP 88ms. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices 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

200ms

0 18656 37312

26–47 48–83 84–149 150–267 268–477 478–854 855–1527 1528–2733 2734–4891 4892–8752 >p98

Good (≤200ms) Needs improvement Poor (>500ms) Site count

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices 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

26–47 46 100% 84ms

48–83 1,061 87% 86ms

84–149 10,517 90% 82ms

150–267 29,896 94% 81ms

268–477 37,312 95% 85ms

478–854 32,475 95% 87ms

855–1527 24,321 96% 89ms

1528–2733 14,849 95% 89ms

2734–4891 13,045 96% 88ms

4892–8752 8,933 95% 93ms

>p98 3,519 93% 92ms

Good Needs Improvement Poor Faded rows: under 100 sites

Lab paint timeline — lcp 556ms. p75 1.4s. p99 19.3s. At the low end (26–47ms): INP 84ms. At the high end (>p98): INP 92ms. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices 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?

Lab paint timeline correlates with the INP. Lab FCP separates passing sites from failing sites the most. Where the lab FCP is low, 85% of sites pass the INP. Where it is high, 94% do. The rise is gradual.

Go fix it How we measured → Chrome DevTools network settings for CWV testing →