1
At a glance the headline numbers for Customer data platforms impact
Performance impact by cdp provider.
5
Providers ranked
After min-sites filter
3,395
Sites in sample
Combined across all items
0.07
Best CLS (p75)
Segment
The State of Web Vitals · November 2026 · 213,971 crawled 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 | 78.6% | 1,419 | |
| 2 | RudderStack | 0.08 | 83.3% | 66 | |
| 3 | Tealium AudienceStream | 0.08 | 79.2% | 1,748 | |
| 4 | Bloomreach | 0.10 | 77.9% | 96 | |
| 5 | Treasure Data | 0.96 | 25.0% | 66 |
The State of Web Vitals · November 2026 · 213,971 crawled 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% 66 0.08
Tealium AudienceStream 0.8% 1,748 0.08
Segment 0.7% 1,419 0.07
Bloomreach 0% 96 0.10
mParticle 0% 9 0.09
Treasure Data 0% 66 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 · November 2026 · 213,971 crawled 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
93133ms
790.08
811.6s
641.0s
Segment 0.7%
911.8s
80155ms
790.07
901.3s
73820ms
Bloomreach 0%
742.6s
73206ms
780.10
771.8s
601.1s
Treasure Data 0%
213.6s
54365ms
250.96
272.5s
181.3s
RudderStack 0%
852.2s
91139ms
830.08
741.8s
461.2s
mParticle 0%
781.7s
75182ms
780.09
781.7s
67915ms
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 · November 2026 · 213,971 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (26) → Bot detection (8) → Email marketing (8) → Marketing pixels (10) → 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.