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
0.07
Best CLS (p75)
Segment
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 | Segment | 0.07 | 79.2% | 1,232 | |
| 2 | RudderStack | 0.08 | 83.6% | 61 | |
| 3 | Tealium AudienceStream | 0.08 | 79.2% | 1,548 | |
| 4 | Bloomreach | 0.10 | 78.0% | 91 | |
| 5 | Treasure Data | 0.96 | 25.4% | 65 |
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
RudderStack 0%
61
0.08
Tealium AudienceStream 0.8%
1,548
0.08
Segment 0.6%
1,232
0.07
Bloomreach 0%
91
0.10
mParticle 0%
8
0.11
Treasure Data 0%
65
0.96
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 79%. 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
Tealium AudienceStream 0.8%
822.2s
93132ms
790.08
821.6s
641.0s
Segment 0.6%
901.8s
79156ms
790.07
881.4s
71843ms
Bloomreach 0%
752.5s
74205ms
780.10
771.8s
591.1s
Treasure Data 0%
213.7s
55353ms
250.96
272.5s
181.3s
RudderStack 0%
872.2s
91139ms
840.08
751.8s
451.2s
mParticle 0%
752.0s
71192ms
750.11
751.7s
63945ms
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: 79% of its sites pass. Segment trails at 79%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals
JS libraries (23) →
Bot detection (7) →
Email marketing (8) →
Marketing pixels (10) →
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.