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
17,242
Sites in sample
Combined across all items
69ms
Best INP (p75)
Algolia Recommend
The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by INP at p75, fastest first

# Provider INP p75 Passing Sites
1 Algolia Recommend 69ms 99.0%
14,565
2 Elfsight 73ms 99.4%
2,553
3 Nosto 108ms 100.0%
55
4 Dynamic Yield 178ms 84.3%
69
The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
3

Passing INP per provider which group passes the INP most often

ProviderSitesPassing INPp75
Nosto 0% 55 100% 108ms
Klevu 0% 26 100% 100ms
Elfsight 1.2% 2,553 99% 73ms
Algolia Recommend 6.9% 14,565 99% 69ms
Dynamic Yield 0% 69 84% 178ms
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 99% and 99%. computed

The State of Web Vitals · October 2026 · 210,902 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
100108ms
600.17
791.6s
561.1s
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 INP: 99% of its sites pass. Elfsight trails at 99%. computed

The State of Web Vitals · October 2026 · 210,902 crawled sites · desktop 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