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
135
Open Page Rank 8+
1
2,856
Open Page Rank 7+
1
14,491
Open Page Rank 6+
5
32,660
Open Page Rank 5+
24
66,346
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
423
988,550
Germany
76
361,975
India
136
354,719
Japan
27
329,383
France
76
322,388
Italy
54
315,256
United Kingdom
166
313,223
Brazil
33
282,509
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart.js | jQuery Migrate |
|---|---|---|
| LCP | 1.6 s | 2.2 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 1100 ms |
Median site's p75 values from the Chrome UX Report, 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.