1
At a glance the headline numbers for Personalization impact
Performance impact by personalization provider.
4
Providers ranked
After min-sites filter
15,493
Sites in sample
Combined across all items
128ms
Best INP (p75)
Elfsight
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by INP at p75, fastest first
| # | Provider | INP p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Elfsight | 128ms | 93.7% | 2,298 | |
| 2 | Algolia Recommend | 137ms | 91.8% | 13,079 | |
| 3 | Nosto | 186ms | 85.1% | 51 | |
| 4 | Dynamic Yield | 320ms | 39.6% | 65 |
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing INP per provider which group passes the INP most often
ProviderSitesPassing INPp75
Elfsight 1.2% 2,298 128ms
Algolia Recommend 6.9% 13,079 137ms
Klevu 0% 26 169ms
Nosto 0% 51 186ms
Dynamic Yield 0% 65 320ms
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good INP (200ms at p75) · one value per site
No provider stands out: pass rates sit between 92% and 94%. computed
The State of Web Vitals · Q2 2026 · 189,915 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
Dynamic Yield 0%
652.7s
40320ms
640.22
712.0s
631.1s
Algolia Recommend 6.9%
812.2s
92137ms
870.03
751.8s
601.1s
Elfsight 1.2%
802.3s
94128ms
870.03
751.8s
601.2s
Nosto 0%
712.5s
85186ms
750.10
731.9s
531.5s
Klevu 0%
722.5s
88169ms
560.20
721.8s
60920ms
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.
Elfsight leads on INP: 94% of its sites pass. Algolia Recommend trails at 92%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (25) → Tag managers (8) → A/B testing (12) → Chat & messaging (17) → 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.