Personalization impact

Performance impact by personalization provider.

Field data PhoneDesktopAll Scope All sites October 2026 edition · Desktop field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for Personalization impact

Performance impact by personalization provider.

4
Providers ranked
After min-sites filter
17,350
Sites in sample
Combined across all items
2.0s
Best LCP (p75)
Algolia Recommend
The State of Web Vitals · October 2026 · 212,308 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by LCP at p75, fastest first

# Provider LCP p75 Passing Sites
1 Algolia Recommend 2.0s 87.1%
14,660
2 Elfsight 2.1s 85.6%
2,565
3 Dynamic Yield 2.2s 79.6%
69
4 Nosto 2.3s 79.2%
56
The State of Web Vitals · October 2026 · 212,308 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
3

Passing LCP per provider which group passes the LCP most often

ProviderSitesPassing LCPp75
Algolia Recommend 6.9% 14,660 87% 2.0s
Elfsight 1.2% 2,565 86% 2.1s
Klevu 0% 26 80% 2.4s
Dynamic Yield 0% 69 80% 2.2s
Nosto 0% 56 79% 2.3s
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good LCP (2.5s at p75) · one value per site

No provider stands out: pass rates sit between 86% and 87%. computed

The State of Web Vitals · October 2026 · 212,308 crawled 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
Algolia Recommend 6.9%
872.0s
9969ms
770.09
831.5s
641.1s
Elfsight 1.2%
862.1s
9973ms
730.11
821.5s
601.2s
Dynamic Yield 0%
802.2s
84178ms
650.13
781.5s
70901ms
Nosto 0%
792.3s
100107ms
600.17
791.6s
571.1s
Klevu 0%
802.4s
100100ms
640.13
801.5s
60845ms
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 LCP: 87% of its sites pass. Elfsight trails at 86%. computed

The State of Web Vitals · October 2026 · 212,308 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (26) → Tag managers (8) → A/B testing (12) → Chat & messaging (17) → 212,308 crawled sites with Chrome field data, representing millions of real page loads · How we measured