Base vs Cart Functionality
Head-to-head usage across the sites we track.
Top sites by authority
Base · Cart Functionality · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
146
Open Page Rank 8+
7
2,468
Open Page Rank 7+
14
10,226
Open Page Rank 6+
17
20,356
Open Page Rank 5+
28
37,111
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Base · Cart Functionality · share of sites in each country using one or the other
United States
30
737,680
United Kingdom
10
239,464
India
13
207,201
Germany
10
196,505
France
10
181,709
Canada
10
166,395
Brazil
7
145,168
Italy
7
138,310
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Base | Cart Functionality |
|---|---|---|
| LCP | 1.9 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 1100 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.