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

phone field data

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

The State of Web Vitals · Q2 2026 · 189,915 sites · phone 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 · phone 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 88% 103ms

1–2 1,079 89% 104ms

3–5 156 94% 103ms

6–10 73 92% 100ms

11–23 9,689 89% 102ms

24–49 41,312 90% 97ms

50–107 34,133 91% 99ms

108–233 29,608 92% 98ms

234–507 27,860 94% 98ms

508–1104 22,819 95% 99ms

1105–2404 11,392 94% 101ms

>p98 3,631 92% 103ms

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 103ms. At the high end (>p98): INP 103ms. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone 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 · phone 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 79% 115ms

76–120 8,318 85% 94ms

121–191 28,433 91% 95ms

192–305 40,715 92% 96ms

306–488 33,414 92% 100ms

489–779 26,520 93% 100ms

780–1243 19,573 93% 102ms

1244–1985 12,485 93% 103ms

1986–3169 6,378 93% 103ms

3170–5060 3,537 92% 103ms

>p98 3,670 90% 102ms

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 115ms. At the high end (>p98): INP 102ms. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone 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 · phone 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 88% 97ms

48–83 1,061 81% 104ms

84–149 10,517 85% 97ms

150–267 29,896 91% 94ms

268–477 37,312 92% 96ms

478–854 32,475 93% 99ms

855–1527 24,321 93% 102ms

1528–2733 14,849 93% 103ms

2734–4891 13,045 93% 101ms

4892–8752 8,933 92% 104ms

>p98 3,519 88% 106ms

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 97ms. At the high end (>p98): INP 106ms. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · phone 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, 79% of sites pass the INP. Where it is high, 90% do. The rise is gradual.

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