1
At a glance the headline numbers for Video impact
Performance impact by video provider.
6
Providers ranked
After min-sites filter
76,100
Sites in sample
Combined across all items
0.03
Best CLS (p75)
YouTube
The State of Web Vitals · November 2026 · 213,971 crawled sites · phone 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 | 87.2% | 68,621 | |
| 2 | Vimeo | 0.04 | 86.0% | 5,668 | |
| 3 | Brightcove | 0.05 | 85.5% | 1,194 | |
| 4 | Wistia | 0.06 | 89.2% | 261 | |
| 5 | JW Player | 0.08 | 78.7% | 196 | |
| 6 | Google IMA SDK | 0.12 | 68.9% | 160 |
The State of Web Vitals · November 2026 · 213,971 crawled sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Wistia 0.1% 261 0.06
YouTube 32.1% 68,621 0.03
Vimeo 2.6% 5,668 0.04
Brightcove 0.6% 1,194 0.05
JW Player 0.1% 196 0.08
Google IMA SDK 0.1% 160 0.12
Vidyard 0% 7 0.37
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
89% of Wistia sites pass CLS. Google IMA SDK trails 20 points behind, leaving 31% of its sites failing. computed
The State of Web Vitals · November 2026 · 213,971 crawled sites · phone 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 32.1%
782.4s
92138ms
870.03
711.9s
531.3s
Vimeo 2.6%
702.7s
95130ms
860.04
622.2s
401.6s
Brightcove 0.6%
822.2s
88143ms
860.05
761.7s
65979ms
Wistia 0.1%
662.8s
93155ms
890.06
622.4s
381.4s
JW Player 0.1%
812.2s
84153ms
790.08
751.8s
651.0s
Google IMA SDK 0.1%
861.8s
74205ms
690.12
901.4s
92586ms
Vidyard 0%
206.8s
60293ms
600.37
206.8s
203.7s
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.
Wistia leads on CLS: 89% of its sites pass. Google IMA SDK trails at 69%. computed
The State of Web Vitals · November 2026 · 213,971 crawled sites · phone field datacorewebvitals.io/state-of-cwv
Related signals Font services (4) → Session recording (11) → A/B testing (12) → Ad networks (9) → 213,971 crawled sites with Chrome field data, representing millions of real page loads · How we measured
213,971 crawled sites with Chrome field data, representing millions of real page loads. How we measured.