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 932

50,690

France 282

31,268

Germany 275

27,684

Italy 213

18,286

United Kingdom 350

18,071

Spain 241

16,401

India 375

13,763

Poland 152

13,668

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, 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.

All ArcGIS API for JavaScript sites · All Leaflet sites