Leaflet

What Leaflet is

Leaflet is an open-source JavaScript library for creating interactive maps that work on mobile devices. It includes tile and WMS layers, markers, popups, vector shapes, image overlays, and GeoJSON. Users can add drag panning, wheel or pinch zoom, keyboard navigation, events, and draggable markers. The project describes a small footprint of about 42 KB of gzipped JavaScript plus 3.5 KB of gzipped CSS. Developers can restyle popups and controls, create custom layers and controls, use custom projections, and extend classes. Leaflet does not require one tile provider; its example uses OpenStreetMap, while tutorials cover WMS and TMS services. Stable files are available through unpkg, cdnjs, jsDelivr, direct downloads, and npm. The download page lists 1.9.4 as stable and 2.0.0-alpha.1 as prerelease, with a warning that the main development version may contain incompatible changes. Leaflet focuses on core mapping functions and recommends plugins when a needed capability is outside that scope. It was created by Volodymyr Agafonkin and is maintained by community contributors.