Video impact React sites

Performance impact by video provider.

Field data PhoneDesktopAll Scope All sites October 2026 edition · All devices field outcomes · React sites only
Metric LCP INP CLS
React Scoped to 9,570 sites out of 210,902 analyzed (frameworks) Compare with all sites →
1

At a glance the headline numbers for Video impact

Performance impact by video provider.

2
Providers ranked
After min-sites filter
2,775
Sites in sample
Combined across all items
0.03
Best CLS (p75)
YouTube
The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by CLS at p75, fastest first

# Provider CLS p75 Passing Sites
1 YouTube 0.03 88.7%
2,596
2 Vimeo 0.04 84.5%
179
The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv
3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75
Brightcove 0.1% 13 92% 0.06
YouTube 27.1% 2,596 89% 0.03
Vimeo 1.9% 179 85% 0.04
Wistia 0.2% 17 67% 0.13
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good CLS (0.1 at p75) · one value per site

No provider stands out: pass rates sit between 85% and 89%. computed

The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv
4

All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75

LCP
INP
CLS
FCP
TTFB
YouTube 27.1%
752.5s
95118ms
890.03
702.0s
521.5s
Vimeo 1.9%
702.9s
95127ms
850.04
632.3s
461.8s
Wistia 0.2%
802.1s
75190ms
670.13
881.5s
75782ms
Brightcove 0.1%
623.1s
88143ms
920.06
542.3s
541.3s
60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites

One row per provider, one column per vital - the cell is the share of sites passing, the small number the p75. No toggling needed to see where the category actually differs.

YouTube leads on CLS: 89% of its sites pass. Vimeo trails at 85%. computed

The State of Web Vitals · October 2026 · React sites (9,570) · all devices field datacorewebvitals.io/state-of-cwv
Related signals Font services (4) → Session recording (11) → A/B testing (12) → Ad networks (9) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured