Personalization impact

Performance impact by personalization provider.

Field data PhoneDesktopAll Scope All sites October 2026 edition · All devices 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
17,242
Sites in sample
Combined across all items
2.1s
Best LCP (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 LCP at p75, fastest first

# Provider LCP p75 Passing Sites
1 Algolia Recommend 2.1s 83.9%
14,565
2 Elfsight 2.2s 81.7%
2,553
3 Nosto 2.5s 74.5%
55
4 Dynamic Yield 2.6s 71.6%
69
The State of Web Vitals · October 2026 · 210,902 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
3

Passing LCP per provider which group passes the LCP most often

ProviderSitesPassing LCPp75
Algolia Recommend 6.9% 14,565 84% 2.1s
Elfsight 1.2% 2,553 82% 2.2s
Nosto 0% 55 75% 2.5s
Klevu 0% 26 73% 2.5s
Dynamic Yield 0% 69 72% 2.6s
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 82% and 84%. 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 LCP: 84% of its sites pass. Elfsight trails at 82%. 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