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 737,680

499

United Kingdom 239,464

90

India 207,201

72

Germany 196,505

85

France 181,709

58

Canada 166,395

192

Brazil 145,168

53

Italy 138,310

58

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, Aug 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