Cart Functionality vs Sellfy
Head-to-head usage across the sites we track.
Top sites by authority
Cart Functionality · Sellfy · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
141
1
Open Page Rank 8+
2,489
1
Open Page Rank 7+
10,234
2
Open Page Rank 6+
20,359
2
Open Page Rank 5+
37,013
2
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 · Sellfy · share of sites in each country using one or the other
United States
729,127
17
United Kingdom
237,218
10
India
207,181
17
Germany
193,696
11
France
180,639
9
Canada
165,082
9
Brazil
144,613
11
Spain
143,412
8
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart Functionality | Sellfy |
|---|---|---|
| LCP | 1.7 s | 2.1 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 900 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.