Cart Functionality vs Estore Shopserve
Head-to-head usage across the sites we track.
Top sites by authority
Cart Functionality · Estore Shopserve · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
138
0
Open Page Rank 8+
2,470
0
Open Page Rank 7+
10,314
0
Open Page Rank 6+
20,555
2
Open Page Rank 5+
37,358
3
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 · Estore Shopserve · share of sites in each country using one or the other
United States
819,640
10
United Kingdom
265,245
1
India
226,526
1
Germany
217,355
0
France
207,855
0
Canada
188,032
2
Brazil
158,050
0
Italy
154,275
0
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart Functionality | Estore Shopserve |
|---|---|---|
| LCP | 1.7 s | 1.3 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 600 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.