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
134
Open Page Rank 8+
1
2,794
Open Page Rank 7+
1
14,047
Open Page Rank 6+
6
31,538
Open Page Rank 5+
23
63,800
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
343
849,474
Germany
56
314,354
India
101
299,510
Italy
46
282,524
Japan
24
282,542
France
47
271,447
United Kingdom
137
269,921
Spain
51
252,481
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart.js | jQuery Migrate |
|---|---|---|
| LCP | 1.5 s | 2.2 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 1100 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.