1
At a glance the headline numbers for Customer data platforms impact
Performance impact by cdp provider.
3
Providers ranked
After min-sites filter
1,506
Sites in sample
Combined across all items
0.08
Best CLS (p75)
Bloomreach
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Bloomreach | 0.08 | 84.8% | 54 | |
| 2 | Segment | 0.11 | 74.6% | 632 | |
| 3 | Tealium AudienceStream | 0.12 | 71.0% | 820 |
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
RudderStack 0% 30 0.05
Bloomreach 0.1% 54 0.08
Segment 0.7% 632 0.11
Tealium AudienceStream 0.9% 820 0.12
Treasure Data 0% 21 0.14
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 71% and 75%. computed
The State of Web Vitals · Q1 2026 · 94,910 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
Tealium AudienceStream 0.9%
852.0s
9879ms
710.12
861.4s
67928ms
Segment 0.7%
872.1s
9887ms
750.11
821.6s
671.0s
Bloomreach 0.1%
722.5s
98125ms
850.08
761.7s
67946ms
RudderStack 0%
921.8s
10071ms
860.05
931.4s
57941ms
Treasure Data 0%
782.2s
88196ms
700.14
701.7s
56950ms
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.
Segment leads on CLS: 75% of its sites pass. Tealium AudienceStream trails at 71%. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (22) → Bot detection (7) → Email marketing (7) → Marketing pixels (10) → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured
Chrome field data from 94,910 sites, representing millions of real page loads. How we measured.