Leaflet – JavaScript library for mobile-friendly interactive maps

Leaflet is a JavaScript library for mobile-friendly interactive maps.

Leaflet is designed with simplicity, performance and usability in mind. It works efficiently across all major desktop and mobile platforms, can be extended with lots of plugins, and has a beautiful, easy to use and well-documented API

This is free and open source software.

Features include:

• Layers:
  • Tile layers, WMS.
  • Markers, Popups.
  • Vector layers: polylines, polygons, circles, rectangles.
  • Image overlays.
  • GeoJSON.
• Interaction:
  • Drag panning with inertia.
  • Scroll wheel zoom.
  • Pinch-zoom on mobile.
  • Double click zoom.
  • Zoom to area (shift-drag).
  • Keyboard navigation.
  • Events: click, mouseover, etc.
  • Marker dragging.
• Visual:
  • Zoom and pan animation.
  • Tile and popup fade animation.
  • Very nice default design for markers, popups and map controls.
  • Retina resolution support.
• Customization:
  • Pure CSS popups and controls for easy restyling.
  • Image- and HTML-based markers.
  • A simple interface for custom map layers and controls.
  • Custom map projections (with EPSG:3857/4326/3395 out of the box).
  • Powerful OOP facilities for extending existing classes.
• Performance:
  • Hardware acceleration on mobile makes it feel as smooth as native apps.
  • Utilizing CSS features to make panning and zooming really smooth.
  • Smart polyline/polygon rendering with dynamic clipping and simplification.
  • Modular build system.
  • Tap delay elimination on mobile.
• Map Controls:
  • Zoom buttons.
  • Attribution.
  • Layer switcher.
  • Scale.
• Provider-agnostic, meaning you can use any map provider as long as you conform to its terms of use.
• Hundreds of third-party plugins are available which extend functionality.

Website: leafletjs.com
Support: GitHub Code Repository
Developer: Volodymyr Agafonkin
License: BSD 2-Clause “Simplified” License

Leaflet is written in ES5, a version of JavaScript. Learn JavaScript with our recommended free books and free tutorials.

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