Cart Functionality vs Fourthwall
Head-to-head usage across the sites we track.
Top sites by authority
Cart Functionality · Fourthwall · how many of each technology's sites sit in the web's highest authority tiers
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 · Fourthwall · share of sites in each country using one or the other
United States
729,127
2,034
United Kingdom
237,218
1,051
India
207,181
1,007
Germany
193,696
968
France
180,639
865
Canada
165,082
902
Brazil
144,613
770
Spain
143,412
817
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart Functionality | Fourthwall |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 600 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Cart Functionality to Fourthwall
| Domain | When |
|---|---|
| justanoval.com | Mar 2026 |
| bozevstheworld.net | Mar 2026 |
Fourthwall to Cart Functionality
| Domain | When |
|---|---|
| theironcrossband.com | Aug 2026 |
| wowgirlsmusic.com | Aug 2026 |
| beatriceflorea.com | Aug 2026 |
| andreeamunteanu.com | Aug 2026 |
| kennyvsspenny.com | Jul 2026 |
| cklive.live | May 2026 |
| fancasajardin.com.ar | Apr 2026 |
| cataquariums.com | Mar 2026 |
| samplefocus.com | Dec 2025 |