ArcGIS API for JavaScript vs Leaflet

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

Top sites by authority

ArcGIS API for JavaScript · Leaflet · 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

ArcGIS API for JavaScript · Leaflet · share of sites in each country using one or the other

United States 919

51,086

France 280

31,482

Germany 275

28,332

Italy 218

18,549

United Kingdom 348

17,984

Spain 237

16,361

Poland 150

14,075

India 377

13,665

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 ArcGIS API for JavaScript sites · All Leaflet sites