Cart Functionality vs EKM
Head-to-head usage across the sites we track.
Top sites by authority
Cart Functionality · EKM · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
141
0
Open Page Rank 8+
2,489
0
Open Page Rank 7+
10,234
0
Open Page Rank 6+
20,359
1
Open Page Rank 5+
37,013
1
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Cart Functionality · EKM · share of sites in each country using one or the other
United States
729,127
89
United Kingdom
237,218
1,135
India
207,181
23
Germany
193,696
22
France
180,639
38
Canada
165,082
11
Brazil
144,613
1
Spain
143,412
30
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart Functionality | EKM |
|---|---|---|
| LCP | 1.7 s | 1.5 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
EKM to Cart Functionality
| Domain | When |
|---|---|
| kombatkit.co.uk | Jul 2026 |
| ac-one.co.uk | May 2026 |