The State of Web Vitals

Document lifecycle (lab)

Lab document lifecycle: DOM interactive, DOM complete, load event.

Field data PhoneDesktopAll Scope All sites Q1 2026 edition · All devices field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for Document lifecycle (lab)

Lab document lifecycle: DOM interactive, DOM complete, load event.

387ms
DOM interactive
on the typical page
688ms
DOM complete
on the typical page
692ms
load event
on the typical page
94,847
sites measured
all-device field data

The typical page reaches DOM interactive after 387ms in the lab.

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
2

Distribution & median CLS site count and median CLS at each level of document lifecycle (lab) — dom interactive

0.00 0.04 0.08 0.11 0.15
0.1
0 11757 23514
0 4–8 9–16 17–33 34–67 68–135 136–273 274–552 553–1115 1116–2253 2254–4555 >p98
Good (≤0.1) Needs improvement Poor (>0.25) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
3

Passing CLS by document lifecycle (lab) — dom interactive which level passes the CLS most often

Document lifecycle (lab) — dom interactiveSitesPassing CLSCLS
0 317 92% 0.00
17–33 532 81% 0.00
34–67 3,203 83% 0.00
68–135 9,427 88% 0.00
136–273 21,973 90% 0.00
274–552 23,514 89% 0.00
553–1115 18,396 88% 0.00
1116–2253 11,156 87% 0.01
2254–4555 4,432 85% 0.01
>p98 1,891 84% 0.01
Good Needs Improvement Poor Faded rows: under 100 sites

Document lifecycle (lab) — dom interactive 387ms. p75 850ms. p99 6.7s. At the low end (0ms): CLS 0.00. At the high end (>p98): CLS 0.01. computed

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
4

Distribution & median CLS site count and median CLS at each level of document lifecycle (lab) — dom complete

0.00 0.04 0.08 0.11 0.15
0.1
0 13517 27034
0 5–11 12–22 23–47 48–100 101–210 211–444 445–938 939–1981 1982–4184 4185–8836 >p98
Good (≤0.1) Needs improvement Poor (>0.25) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
5

Passing CLS by document lifecycle (lab) — dom complete which level passes the CLS most often

Document lifecycle (lab) — dom completeSitesPassing CLSCLS
0 750 90% 0.00
23–47 543 91% 0.00
48–100 1,643 90% 0.00
101–210 7,250 89% 0.00
211–444 21,237 90% 0.00
445–938 27,034 88% 0.00
939–1981 20,747 87% 0.00
1982–4184 9,965 85% 0.01
4185–8836 3,789 83% 0.01
>p98 1,882 83% 0.01
Good Needs Improvement Poor Faded rows: under 100 sites

Document lifecycle (lab) — dom complete 688ms. p75 1.4s. p99 15.0s. At the low end (0ms): CLS 0.00. At the high end (>p98): CLS 0.01. computed

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
6

Distribution & median CLS site count and median CLS at each level of document lifecycle (lab) — load

0.00 0.04 0.08 0.11 0.15
0.1
0 13496 26991
0 5–11 12–22 23–47 48–100 101–211 212–446 447–943 944–1993 1994–4214 4215–8907 >p98
Good (≤0.1) Needs improvement Poor (>0.25) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
7

Passing CLS by document lifecycle (lab) — load which level passes the CLS most often

Document lifecycle (lab) — loadSitesPassing CLSCLS
0 758 90% 0.00
23–47 542 91% 0.00
48–100 1,635 90% 0.00
101–211 7,268 89% 0.00
212–446 21,197 90% 0.00
447–943 26,991 88% 0.00
944–1993 20,756 87% 0.00
1994–4214 10,012 85% 0.01
4215–8907 3,800 83% 0.01
>p98 1,881 83% 0.01
Good Needs Improvement Poor Faded rows: under 100 sites

Document lifecycle (lab) — load 692ms. p75 1.4s. p99 15.1s. At the low end (0ms): CLS 0.00. At the high end (>p98): CLS 0.01. computed

The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
8

Why this matters for the Core Web Vitals, and where to start fixing it

The document lifecycle is the old way of measuring pages, and it still says useful things. DOM interactive marks the HTML fully parsed. DOM complete waits for the subresources. The load event is the official end of loading, and everything that listens for it (analytics, widgets, third-party tags) starts there.

A long gap between interactive and complete means resource weight, not markup. These milestones do not map onto user experience the way the vitals do, which is why they were replaced. But a page with a slow lifecycle does not produce fast vitals.

How does this affect the Core Web Vitals?

Document lifecycle (lab) correlates with the CLS. DOM interactive separates passing sites from failing sites the most. Where the DOM interactive is low, 92% of sites pass the CLS. Where it is high, 84% do. The decline is gradual. There is no point where sites suddenly start failing.

Go fix it How we measured → Head vs footer JavaScript →
Related signals Total Blocking Time (lab) → Main-thread CPU (lab) → Lab paint timeline → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured