1
At a glance the headline numbers for Video impact
Performance impact by video provider.
6
Providers ranked
After min-sites filter
67,578
Sites in sample
Combined across all items
0.05
Best CLS (p75)
Vimeo
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Vimeo | 0.05 | 86.1% | 5,029 | |
| 2 | YouTube | 0.05 | 86.0% | 60,939 | |
| 3 | Wistia | 0.06 | 88.4% | 242 | |
| 4 | Brightcove | 0.06 | 85.1% | 1,053 | |
| 5 | JW Player | 0.09 | 78.9% | 174 | |
| 6 | Google IMA SDK | 0.13 | 66.2% | 141 |
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Wistia 0.1%
242
0.06
Vimeo 2.6%
5,029
0.05
YouTube 32.1%
60,939
0.05
Brightcove 0.6%
1,053
0.06
JW Player 0.1%
174
0.09
Google IMA SDK 0.1%
141
0.13
Vidyard 0%
7
0.18
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
88% of Wistia sites pass CLS. Google IMA SDK trails 22 points behind, leaving 34% of its sites failing. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · 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 32.1%
792.3s
95116ms
860.05
721.9s
521.4s
Vimeo 2.6%
722.6s
97110ms
860.05
652.1s
401.6s
Brightcove 0.6%
862.1s
92118ms
850.06
791.7s
69898ms
Wistia 0.1%
682.8s
93136ms
880.06
632.3s
391.4s
JW Player 0.1%
812.0s
89125ms
790.09
801.7s
69949ms
Google IMA SDK 0.1%
861.8s
78183ms
660.13
881.4s
89563ms
Vidyard 0%
436.7s
83153ms
570.18
575.5s
293.8s
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: 88% of its sites pass. Google IMA SDK trails at 66%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals
Font services (4) →
Session recording (11) →
A/B testing (10) →
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Chrome field data from 189,915 sites, representing millions of real page loads · How we measured
Chrome field data from 189,915 sites, representing millions of real page loads. How we measured.