AfterBuy vs Cart Functionality
Head-to-head usage across the sites we track.
Top sites by authority
AfterBuy · Cart Functionality · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
138
Open Page Rank 8+
0
2,470
Open Page Rank 7+
0
10,314
Open Page Rank 6+
1
20,555
Open Page Rank 5+
1
37,358
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
AfterBuy · Cart Functionality · share of sites in each country using one or the other
United States
0
819,640
United Kingdom
0
265,245
India
2
226,526
Germany
140
217,355
France
0
207,855
Canada
0
188,032
Brazil
0
158,050
Italy
2
154,275
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | AfterBuy | Cart Functionality |
|---|---|---|
| LCP | 1.5 s | 1.7 s |
| INP | 50 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 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.