1
At a glance the headline numbers for Customer data platforms impact
Performance impact by cdp provider.
5
Providers ranked
After min-sites filter
2,997
Sites in sample
Combined across all items
0.02
Best CLS (p75)
RudderStack
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | RudderStack | 0.02 | 86.1% | 61 | |
| 2 | Segment | 0.06 | 78.6% | 1,232 | |
| 3 | Tealium AudienceStream | 0.08 | 80.9% | 1,548 | |
| 4 | Bloomreach | 0.09 | 80.0% | 91 | |
| 5 | Treasure Data | 0.99 | 24.6% | 65 |
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
RudderStack 0%
61
0.02
Tealium AudienceStream 0.8%
1,548
0.08
Bloomreach 0%
91
0.09
Segment 0.6%
1,232
0.06
mParticle 0%
8
0.12
Treasure Data 0%
65
0.99
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 79% and 81%. computed
The State of Web Vitals · Q2 2026 · 189,915 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
Tealium AudienceStream 0.8%
812.3s
88153ms
810.08
801.6s
65995ms
Segment 0.6%
881.9s
75201ms
790.06
871.5s
68870ms
Bloomreach 0%
732.6s
69229ms
800.09
771.8s
621.1s
Treasure Data 0%
213.6s
57359ms
250.99
232.5s
181.3s
RudderStack 0%
832.2s
86147ms
860.02
691.9s
461.2s
mParticle 0%
752.0s
75201ms
750.12
751.4s
75773ms
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.
Tealium AudienceStream leads on CLS: 81% of its sites pass. Segment trails at 79%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
Related signals
JS libraries (23) →
Bot detection (7) →
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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.