Cart Functionality vs Robin
Head-to-head usage across the sites we track.
Top sites by authority
Cart Functionality · Robin · how many of each technology's sites sit in the web's highest authority tiers
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 · Robin · share of sites in each country using one or the other
United States
737,680
39
United Kingdom
239,464
53
India
207,201
28
Germany
196,505
134
France
181,709
85
Canada
166,395
14
Brazil
145,168
6
Italy
138,310
52
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart Functionality | Robin |
|---|---|---|
| LCP | 1.7 s | 1.5 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 800 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Cart Functionality to Robin
| Domain | When |
|---|---|
| perfectlybasics.com | Sep 2025 |
Robin to Cart Functionality
| Domain | When |
|---|---|
| msmode.es | May 2026 |