1
At a glance the headline numbers for Images per page
How many images the page renders and their over-the-wire weight.
22
image count
on the typical page
1.1 MB
image weight
on the typical page
2.8 MB
1 in 4 pages exceed this
image weight
94,910
sites measured
desktop field data
The typical page serves 22 images weighing 1.1 MB.
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
2
Distribution & median CLS site count and median CLS at each level of images per page — n
0.00 0.04 0.08 0.11 0.15
0 10711 21422
0 1–2 3 4 5–7 8–12 13–19 20–32 33–52 53–85 86–139 >p98
Good (≤0.1) Needs improvement Poor (>0.25) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing CLS by images per page — n which level passes the CLS most often
Images per page — nSitesPassing CLSCLS
0 1,836 81% 0.01
1–2 3,992 81% 0.01
3 2,172 77% 0.03
4 1,872 78% 0.02
5–7 6,129 83% 0.02
8–12 11,144 80% 0.02
13–19 15,864 80% 0.02
20–32 21,422 79% 0.03
33–52 15,876 76% 0.03
53–85 8,838 76% 0.04
86–139 3,935 75% 0.04
>p98 1,830 74% 0.05
Good Needs Improvement Poor Faded rows: under 100 sites
Images per page — n 22. p75 39. p99 178.9. At the low end (0): CLS 0.01. At the high end (>p98): CLS 0.05. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
4
Distribution & median CLS site count and median CLS at each level of images per page — size
0.00 0.04 0.08 0.11 0.15
0 14829 29657
0 0.1–0.337 0.337–1.14 1.14–3.83 3.83–12.9 12.9–43.4 43.4–146 146–493 493–1662 1662–5600 5600–18871 >p98
Good (≤0.1) Needs improvement Poor (>0.25) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
5
Passing CLS by images per page — size which level passes the CLS most often
Images per page — sizeSitesPassing CLSCLS
0 2,319 80% 0.01
0.1–0.337 116 81% 0.02
0.337–1.14 164 76% 0.03
1.14–3.83 526 80% 0.02
3.83–12.9 1,403 77% 0.02
12.9–43.4 2,459 81% 0.02
43.4–146 5,417 81% 0.02
146–493 15,480 81% 0.02
493–1662 29,657 79% 0.03
1662–5600 25,970 76% 0.03
5600–18871 9,540 75% 0.04
>p98 1,852 72% 0.04
Good Needs Improvement Poor Faded rows: under 100 sites
Images per page — size 1.1 MB. p75 2.8 MB. p99 26.8 MB. At the low end (0 KB): CLS 0.01. At the high end (>p98): CLS 0.04. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
6
Why this matters for the Core Web Vitals, and where to start fixing it
Image count and image weight are the bulk of most pages. Those bytes compete with the LCP image for bandwidth: the browser downloads gallery thumbnails while the hero is still streaming. More images also means more decode work, and decoding is not free on a cheap phone.
Fewer, smaller, later. Cut the decorative ones, right-size the rest, lazy-load below the fold. The format and loading splits in the explorer show where to start.
How do images affect the Core Web Vitals?
Passing LCP barely moves across the range: 83% at one end, 79% 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.