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
0.04
Best CLS (p75)
Segment
The State of Web Vitals · Q1 2026 · 94,910 sites · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Segment | 0.04 | 79.7% | 632 | |
| 2 | Bloomreach | 0.05 | 84.0% | 54 | |
| 3 | Tealium AudienceStream | 0.08 | 80.5% | 820 |
The State of Web Vitals · Q1 2026 · 94,910 sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
RudderStack 0% 30 0.02
Bloomreach 0.1% 54 0.05
Tealium AudienceStream 0.9% 820 0.08
Segment 0.7% 632 0.04
Treasure Data 0% 21 0.94
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 80% and 81%. computed
The State of Web Vitals · Q1 2026 · 94,910 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 0.9%
792.3s
89153ms
810.08
801.6s
651.0s
Segment 0.7%
861.9s
76192ms
800.04
861.5s
66897ms
Bloomreach 0.1%
702.6s
75200ms
840.05
761.7s
601.1s
RudderStack 0%
811.9s
85136ms
880.02
771.8s
351.2s
Treasure Data 0%
263.6s
58359ms
320.94
262.4s
161.3s
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 80%. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · phone 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.