The State of Web Vitals

Images per page

How many images the page renders and their over-the-wire weight.

Field data PhoneDesktopAll Scope All sites Q1 2026 edition · Desktop field outcomes
Metric LCP INP CLS
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 INP site count and median INP at each level of images per page — n

0ms 63ms 125ms 188ms 250ms
200ms
0 10711 21422
0 1–2 3 4 5–7 8–12 13–19 20–32 33–52 53–85 86–139 >p98
Good (≤200ms) Needs improvement Poor (>500ms) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
3

Passing INP by images per page — n which level passes the INP most often

Images per page — nSitesPassing INPINP
0 1,836 96% 50ms
1–2 3,992 97% 49ms
3 2,172 98% 50ms
4 1,872 98% 50ms
5–7 6,129 98% 46ms
8–12 11,144 99% 45ms
13–19 15,864 99% 46ms
20–32 21,422 99% 47ms
33–52 15,876 99% 49ms
53–85 8,838 99% 54ms
86–139 3,935 99% 58ms
>p98 1,830 99% 60ms
Good Needs Improvement Poor Faded rows: under 100 sites

Images per page — n 22. p75 39. p99 178.9. At the low end (0): INP 50ms. At the high end (>p98): INP 60ms. computed

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

Distribution & median INP site count and median INP at each level of images per page — size

0ms 63ms 125ms 188ms 250ms
200ms
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 (≤200ms) Needs improvement Poor (>500ms) Site count
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
5

Passing INP by images per page — size which level passes the INP most often

Images per page — sizeSitesPassing INPINP
0 2,319 96% 50ms
0.1–0.337 116 94% 56ms
0.337–1.14 164 98% 57ms
1.14–3.83 526 97% 58ms
3.83–12.9 1,403 98% 51ms
12.9–43.4 2,459 98% 49ms
43.4–146 5,417 98% 47ms
146–493 15,480 99% 48ms
493–1662 29,657 99% 49ms
1662–5600 25,970 99% 49ms
5600–18871 9,540 99% 49ms
>p98 1,852 99% 51ms
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): INP 50ms. At the high end (>p98): INP 51ms. 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.

Go fix it Optimize images for Core Web Vitals → Defer offscreen images → Page speed on a budget →
Related signals Iframes per page → Bytes by resource type → Stylesheet loading mix → Iframe loading → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured