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
0.09
Best CLS (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 CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Algolia Recommend | 0.09 | 77.3% | 14,660 | |
| 2 | Elfsight | 0.11 | 72.7% | 2,565 | |
| 3 | Dynamic Yield | 0.13 | 64.8% | 69 | |
| 4 | Nosto | 0.17 | 60.4% | 56 |
The State of Web Vitals · October 2026 · 212,308 crawled sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Algolia Recommend 6.9% 14,660 0.09
Elfsight 1.2% 2,565 0.11
Dynamic Yield 0% 69 0.13
Klevu 0% 26 0.13
Nosto 0% 56 0.17
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 73% and 77%. 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 CLS: 77% of its sites pass. Elfsight trails at 73%. 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
212,308 crawled sites with Chrome field data, representing millions of real page loads. How we measured.