1
At a glance the headline numbers for Personalization impact
Performance impact by personalization provider.
4
Providers ranked
After min-sites filter
17,242
Sites in sample
Combined across all items
0.04
Best CLS (p75)
Algolia Recommend
The State of Web Vitals · October 2026 · 210,902 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 | Algolia Recommend | 0.04 | 86.4% | 14,565 | |
| 2 | Elfsight | 0.05 | 86.4% | 2,553 | |
| 3 | Nosto | 0.11 | 74.5% | 55 | |
| 4 | Dynamic Yield | 0.18 | 65.7% | 69 |
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Algolia Recommend 6.9% 14,565 0.04
Elfsight 1.2% 2,553 0.05
Nosto 0% 55 0.11
Dynamic Yield 0% 69 0.18
Klevu 0% 26 0.21
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 86% and 86%. computed
The State of Web Vitals · October 2026 · 210,902 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
Algolia Recommend 6.9%
842.1s
95115ms
860.04
781.7s
621.1s
Elfsight 1.2%
822.2s
96112ms
860.05
771.7s
601.2s
Dynamic Yield 0%
722.6s
49287ms
660.18
751.8s
62963ms
Nosto 0%
752.5s
91166ms
750.11
751.7s
561.2s
Klevu 0%
732.5s
96153ms
540.21
811.7s
62938ms
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.
Algolia Recommend leads on CLS: 86% of its sites pass. Elfsight trails at 86%. computed
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (26) → Tag managers (8) → A/B testing (12) → Chat & messaging (17) → 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.