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 1,006

57,469

France 350

35,693

Germany 308

31,190

United Kingdom 383

20,056

Italy 253

20,159

Spain 263

17,955

Poland 167

15,325

India 409

14,970

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 ArcGIS API for JavaScript sites · All Leaflet sites