Cart.js vs jQuery Migrate
Head-to-head usage across the sites we track.
Top sites by authority
Cart.js · jQuery Migrate · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
133
Open Page Rank 8+
1
2,812
Open Page Rank 7+
1
14,235
Open Page Rank 6+
6
32,035
Open Page Rank 5+
24
65,038
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Cart.js · jQuery Migrate · share of sites in each country using one or the other
United States
352
873,360
Germany
60
320,699
India
104
307,283
Japan
23
283,792
United Kingdom
139
271,907
Italy
46
269,098
France
54
267,883
Brazil
26
256,253
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart.js | jQuery Migrate |
|---|---|---|
| LCP | 1.6 s | 2.1 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 1100 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.