Cart Functionality vs Zen Cart
Head-to-head usage across the sites we track.
Top sites by authority
Cart Functionality · Zen Cart · 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
1
Open Page Rank 7+
10,314
1
Open Page Rank 6+
20,555
1
Open Page Rank 5+
37,358
6
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 · Zen Cart · share of sites in each country using one or the other
United States
819,640
599
United Kingdom
265,245
229
India
226,526
61
Germany
217,355
49
France
207,855
55
Canada
188,032
121
Brazil
158,050
25
Italy
154,275
84
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart Functionality | Zen Cart |
|---|---|---|
| LCP | 1.7 s | 1.3 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 700 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.