Cart Functionality vs Modified
Head-to-head usage across the sites we track.
Top sites by authority
Cart Functionality · Modified · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
141
0
Open Page Rank 8+
2,489
0
Open Page Rank 7+
10,234
0
Open Page Rank 6+
20,359
0
Open Page Rank 5+
37,013
0
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 · Modified · share of sites in each country using one or the other
United States
712,664
1
United Kingdom
235,233
2
India
204,930
0
Germany
195,237
55
France
178,625
0
Canada
161,914
0
Spain
143,486
0
Italy
141,982
4
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart Functionality | Modified |
|---|---|---|
| LCP | 1.7 s | 1.1 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 600 ms |
Median site's p75 values from the Chrome UX Report, Oct 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.