The State of Web Vitals

Media per page

Audio and video elements on the page and their 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 Media per page

Audio and video elements on the page and their weight.

0
media count
on the typical page
40 KB
media weight
on the typical page
2.9 MB
1 in 4 pages exceed this
media weight
94,910
sites measured
desktop field data

The typical page embeds 0 media files.

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 media per page — n

0.00 0.04 0.08 0.11 0.15
0.1
0 42725 85449
0 1 2 3 4 5 6–7 8–9 10–12 13–16 >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 media per page — n which level passes the CLS most often

Media per page — nSitesPassing CLSCLS
0 85,449 78% 0.03
1 4,051 78% 0.03
2 1,555 78% 0.03
3 1,555 79% 0.03
4 605 79% 0.03
5 397 70% 0.04
6–7 599 77% 0.03
8–9 219 74% 0.03
10–12 175 86% 0.03
13–16 129 88% 0.02
>p98 176 83% 0.03
Good Needs Improvement Poor Faded rows: under 100 sites

Media per page — n 0. p75 0. p99 6. Spearman with CLS r = +0.36. At the low end (0): CLS 0.03. At the high end (>p98): CLS 0.03. 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 media per page — size

0.00 0.04 0.08 0.11 0.15
0.1
0 1868 3735
0 0.1–0.364 0.364–1.32 1.32–4.82 4.82–17.5 17.5–63.8 63.8–232 232–845 845–3073 3073–11181 11181–40685 >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 media per page — size which level passes the CLS most often

Media per page — sizeSitesPassing CLSCLS
0 3,735 78% 0.03
1.32–4.82 56 78% 0.04
4.82–17.5 264 76% 0.04
17.5–63.8 1,161 77% 0.03
63.8–232 673 75% 0.03
232–845 333 81% 0.04
845–3073 875 79% 0.03
3073–11181 1,454 79% 0.03
11181–40685 776 79% 0.03
>p98 115 86% 0.03
Good Needs Improvement Poor Faded rows: under 100 sites

Media per page — size 40 KB. p75 2.9 MB. p99 45.2 MB. At the low end (0 KB): CLS 0.03. At the high end (>p98): CLS 0.03. 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

When audio or video is present, it outweighs everything else on the page. An autoplaying background video competes with the LCP image for bandwidth at the worst moment, and on phones it burns data the visitor never asked for.

A poster image carries the experience until the visitor opts in. It loads like an image, it can be the LCP candidate, and the video starts on interaction. Autoplay hero video is the expensive way to do what a good photo does.

How does this affect the Core Web Vitals?

Passing LCP barely moves across the range: 86% at one end, 85% at the other. This signal does not separate passing sites from failing ones.

Go fix it Perfect YouTube Core Web Vitals → Page speed on a budget →
Related signals Stylesheets per page → Script initiator → Image dimensions set → Image source mix → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured