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
0.06
Best CLS (p75)
Wistia
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Wistia | 0.06 | 85.7% | 242 | |
| 2 | Vimeo | 0.10 | 75.6% | 5,029 | |
| 3 | YouTube | 0.10 | 76.6% | 60,939 | |
| 4 | JW Player | 0.12 | 73.0% | 174 | |
| 5 | Google IMA SDK | 0.13 | 60.9% | 141 | |
| 6 | Brightcove | 0.16 | 67.6% | 1,053 |
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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
Vidyard 0%
7
0.02
YouTube 32.1%
60,939
0.10
Vimeo 2.6%
5,029
0.10
JW Player 0.1%
174
0.12
Brightcove 0.6%
1,053
0.16
Google IMA SDK 0.1%
141
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
86% of Wistia sites pass CLS. Google IMA SDK trails 25 points behind, leaving 39% of its sites failing. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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%
842.1s
9969ms
770.10
801.6s
581.2s
Vimeo 2.6%
782.4s
9967ms
760.10
731.8s
461.5s
Brightcove 0.6%
842.0s
9875ms
680.16
831.6s
70906ms
Wistia 0.1%
782.4s
9978ms
860.06
702.0s
461.3s
JW Player 0.1%
831.9s
9676ms
730.12
831.6s
68958ms
Google IMA SDK 0.1%
891.7s
9595ms
610.13
941.2s
89524ms
Vidyard 0%
406.9s
100126ms
800.02
405.3s
204.1s
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: 86% of its sites pass. Google IMA SDK trails at 61%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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.