1
At a glance the headline numbers for Scripts per page
How many scripts the page runs and their over-the-wire weight.
26
script count
on the typical page
552 KB
script weight
on the typical page
1,007 KB
1 in 4 pages exceed this
script weight
180,899
sites measured
desktop field data
The typical page runs 26 scripts weighing 552 KB.
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
2
Distribution & median INP site count and median INP at each level of scripts per page — n
0ms 63ms 125ms 188ms 250ms
0 9927 19854
5–9 10–14 15–19 20–24 25–29 30–34 35–39 40–44 45–49 50–54 55–59 60–64 65–69 70–74 75–79 80+
Good (≤200ms) Needs improvement Poor (>500ms) Site count
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing INP by scripts per page — n which level passes the INP most often
Scripts per page — nSitesPassing INPINP
5–9 14,865 98% 47ms
10–14 19,854 99% 46ms
15–19 17,447 99% 46ms
20–24 15,796 99% 47ms
25–29 13,865 99% 48ms
30–34 11,862 99% 49ms
35–39 10,243 99% 49ms
40–44 8,512 99% 50ms
45–49 7,105 99% 50ms
50–54 5,958 99% 51ms
55–59 5,141 99% 51ms
60–64 4,201 99% 51ms
65–69 3,530 99% 52ms
70–74 3,664 99% 51ms
75–79 3,602 99% 54ms
80+ 17,893 99% 61ms
Good Needs Improvement Poor Faded rows: under 100 sites
Scripts per page — n 26. p75 49. p99 156. At the low end (5–9): INP 47ms. At the high end (80+): INP 61ms. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
4
Distribution & median INP site count and median INP at each level of scripts per page — size
0ms 63ms 125ms 188ms 250ms
0 17209 34418
0–199 200–399 400–599 600–799 800–999 1000–1199 1200–1399 1400–1599 1600–1799 1800+
Good (≤200ms) Needs improvement Poor (>500ms) Site count
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
5
Passing INP by scripts per page — size which level passes the INP most often
Scripts per page — sizeSitesPassing INPINP
0–199 34,418 99% 41ms
200–399 33,297 100% 45ms
400–599 26,236 99% 46ms
600–799 21,252 99% 48ms
800–999 16,562 99% 50ms
1000–1199 12,061 99% 53ms
1200–1399 8,648 99% 57ms
1400–1599 6,041 98% 58ms
1600–1799 4,464 98% 61ms
1800+ 13,322 97% 65ms
Good Needs Improvement Poor Faded rows: under 100 sites
Scripts per page — size 552 KB. p75 1,007 KB. p99 3.7 MB. At the low end (0–199 KB): INP 41ms. At the high end (1800+ KB): INP 65ms. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
6
Why this matters for the Core Web Vitals, and where to start fixing it
Script weight is the most expensive weight. A kilobyte of JavaScript costs more than a kilobyte of image, because after the download it is parsed, compiled and executed on the main thread. That is the same thread that must answer every click and keystroke, which is why script totals track INP.
The count matters next to the bytes: every script is a potential long task and another spot for the main thread to stall. Most pages would lose nothing by deferring most of their scripts. The ones that truly must run early are rare.
How do scripts affect the Core Web Vitals?
Passing INP barely moves across the range: 99% at one end, 97% at the other. This signal does not separate passing sites from failing ones.
Chrome field data from 189,915 sites, representing millions of real page loads. How we measured.