Cart Functionality vs SummerCart

Head-to-head usage across the sites we track.

Top sites by authority

Cart Functionality · SummerCart · 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 · SummerCart · share of sites in each country using one or the other

United States 819,640

559

United Kingdom 265,245

116

India 226,526

78

Germany 217,355

105

France 207,855

73

Canada 188,032

218

Brazil 158,050

62

Italy 154,275

71

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

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.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All Cart Functionality sites · All SummerCart sites