1
At a glance the headline numbers for Customer data platforms impact
Performance impact by cdp provider.
5
Providers ranked
After min-sites filter
3,339
Sites in sample
Combined across all items
0.03
Best CLS (p75)
RudderStack
The State of Web Vitals · October 2026 · 210,902 crawled 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 | 0.03 | 84.6% | 66 | |
| 2 | Segment | 0.06 | 78.2% | 1,391 | |
| 3 | Tealium AudienceStream | 0.08 | 80.9% | 1,721 | |
| 4 | Bloomreach | 0.09 | 80.5% | 95 | |
| 5 | Treasure Data | 0.99 | 24.1% | 66 |
The State of Web Vitals · October 2026 · 210,902 crawled sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
RudderStack 0% 66 0.03
Tealium AudienceStream 0.8% 1,721 0.08
Bloomreach 0% 95 0.09
Segment 0.7% 1,391 0.06
mParticle 0% 9 0.10
Treasure Data 0% 66 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 78% and 81%. computed
The State of Web Vitals · October 2026 · 210,902 crawled 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
88154ms
810.08
801.6s
65993ms
Segment 0.7%
881.9s
75196ms
780.06
881.4s
70857ms
Bloomreach 0%
722.6s
67229ms
810.09
771.8s
631.1s
Treasure Data 0%
213.6s
56374ms
240.99
222.5s
171.3s
RudderStack 0%
842.0s
87145ms
850.03
721.8s
471.2s
mParticle 0%
781.7s
78191ms
780.10
781.3s
78748ms
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 78%. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · phone field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (26) → Bot detection (8) → Email marketing (8) → Marketing pixels (10) → 210,902 crawled sites with Chrome field data, representing millions of real page loads · How we measured
210,902 crawled sites with Chrome field data, representing millions of real page loads. How we measured.