Personalization impact WordPress sites
Performance impact by personalization provider.
1
At a glance the headline numbers for Personalization impact
Performance impact by personalization provider.
2
Providers ranked
After min-sites filter
4,025
Sites in sample
Combined across all items
0.02
Best CLS (p75)
Elfsight
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Elfsight | 0.02 | 88.1% | 680 | |
| 2 | Algolia Recommend | 0.02 | 89.2% | 3,345 |
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Algolia Recommend 5.3% 3,345 0.02
Elfsight 1.1% 680 0.02
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 88% and 89%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone 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 5.3%
692.7s
96128ms
890.02
582.3s
301.8s
Elfsight 1.1%
623.0s
93129ms
880.02
522.5s
301.9s
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: 89% of its sites pass. Elfsight trails at 88%. computed
The State of Web Vitals · October 2026 · WordPress sites (63,295) · phone field datacorewebvitals.io/state-of-cwv
Related signals JS libraries (26) → Tag managers (8) → A/B testing (12) → Chat & messaging (17) → 203,892 crawled sites with Chrome field data, representing millions of real page loads · How we measured
203,892 crawled sites with Chrome field data, representing millions of real page loads. How we measured.