Leaflet/docs/index.html

---
layout: v2
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<div class="announcement">Jan 23, 2017 — <a href="http://leafletjs.com/2017/01/23/leaflet-1.0.3.html">Leaflet 1.0.3</a>, a bugfix release, is out.</div>

<p>Leaflet is the leading open-source JavaScript library for mobile-friendly interactive maps.
Weighing just about <abbr title="38 KB gzipped &mdash; that's 133 KB minified and 378 KB in the source form, with 10 KB of CSS (2 KB gzipped) and 11 KB of images.">38 KB of JS</abbr>,
it&nbsp;has all the mapping <a href="#features">features</a> most developers ever need.</p>

<p>Leaflet is designed with <em>simplicity</em>, <em>performance</em> and <em>usability</em> in mind.
It works efficiently across all major desktop and mobile platforms,
can be extended with lots of <a href="plugins.html">plugins</a>,
has a beautiful, easy to use and <a title="Leaflet API reference" href="reference.html">well-documented API</a>
and a simple, readable&nbsp;<a title="Leaflet source code repository on GitHub" href="https://github.com/Leaflet/Leaflet">source code</a> that is a&nbsp;joy to
<a title="A guide to contributing to Leaflet" href="https://github.com/Leaflet/Leaflet/blob/master/CONTRIBUTING.md">contribute</a> to.</p>

<div id="map" class="map map-home" style="height: 300px; margin-top: 50px"></div>

<p>Here we create a map in the <code>'map'</code> div, add <abbr title="Here we use OpenStreetMap tiles, but Leaflet doesn't force you to &mdash; use whatever works for you, it's open source!">tiles of our choice</abbr>, and then add a marker with some text in a popup:</p>

<pre class="basic-code javascript"><code>var map = L.map('map').setView([51.505, -0.09], 13);

L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
    attribution: '&amp;copy; &lt;a href="http://osm.org/copyright"&gt;OpenStreetMap&lt;/a&gt; contributors'
}).addTo(map);

L.marker([51.5, -0.09]).addTo(map)
    .bindPopup('A pretty CSS3 popup.&lt;br&gt; Easily customizable.')
    .openPopup();</code></pre>

<p>Learn more with the <a href="examples/quick-start/">quick start guide</a>, check out <a href="examples.html">other tutorials</a>,
or head straight to the <a href="reference.html">API documentation</a>.
If you have any questions, take a look at the <a href="https://github.com/Leaflet/Leaflet/blob/master/FAQ.md">FAQ</a> first.</p>


</div>

<h2 class="usedby-title">Trusted by the best</h2>
<div class="usedby">
  <div class="container">
    <a class="logo logo-github" href="https://github.com">GitHub</a>
    <a class="logo logo-foursquare" href="http://foursquare.com">foursquare</a>
    <a class="logo logo-pinterest" href="https://www.pinterest.com">Pinterest</a>
    <a class="logo logo-facebook" href="https://www.facebook.com/">Facebook</a>
    <a class="logo logo-evernote" href="https://evernote.com">Evernote</a>
    <a class="logo logo-etsy" href="https://www.etsy.com/">Etsy</a>
    <a class="logo logo-flickr" href="https://www.flickr.com/">Flickr</a>
    <a class="logo logo-500px" href="https://500px.com">500px</a>
    <a class="logo logo-datagov" href="http://www.data.gov/">Data.gov</a>
    <a class="logo logo-european-commission" href="http://ec.europa.eu/">European Commission</a>
    <a class="logo logo-wpost" href="https://www.washingtonpost.com">The Washington Post</a>
    <a class="logo logo-ftimes" href="http://www.ft.com">Financial Times</a>
    <a class="logo logo-npr" href="http://www.npr.org">NPR</a>
    <a class="logo logo-usatoday" href="http://www.usatoday.com">USA Today</a>
    <a class="logo logo-nps" href="http://www.nps.gov/">National Park Service</a>
    <a class="logo logo-ign" href="http://ign.com">IGN.com</a>
  </div>
</div>

<div class="container">

<h2 id="features">Features</h2>

<p>Leaflet doesn't try to do everything for everyone. Instead it focuses on making <em>the basic things work perfectly</em>.</p>

<div class="features clearfix">
    <div class="no-break">
        <h3>Layers Out of the Box</h3>

        <ul>
            <li>Tile layers, WMS</li>
            <li>Markers, Popups</li>
            <li>Vector layers<span class="quiet">: polylines, polygons, circles, rectangles</span></li>
            <li>Image overlays</li>
            <li>GeoJSON</li>
        </ul>
    </div>


    <div class="no-break">
        <h3>Interaction Features</h3>

        <ul>
            <li>Drag panning with inertia</li>
            <li>Scroll wheel zoom</li>
            <li>Pinch-zoom on mobile</li>
            <li>Double click zoom</li>
            <li>Zoom to area <span class="quiet">(shift-drag)</span></li>
            <li>Keyboard navigation</li>
            <li>Events<span class="quiet">: click, mouseover, etc.</span></li>
            <li>Marker dragging</li>
        </ul>
    </div>

    <div class="no-break">
        <h3>Visual Features</h3>

        <ul>
            <li>Zoom and pan animation</li>
            <li>Tile and popup fade animation</li>
            <li>Very nice default design <span class="quiet">for markers, popups and map controls</span></li>
            <li>Retina resolution support</li>
        </ul>
    </div>


    <div class="no-break">
        <h3>Customization Features</h3>

        <ul>
            <li>Pure CSS3 popups and controls <span class="quiet">for easy restyling</span></li>
            <li>Image- and HTML-based markers</li>
            <li><span class="quiet">A simple interface for</span> custom map layers and controls</li>
            <li>Custom map projections <span class="quiet">(with <code>EPSG:3857/4326/3395</code> out of the box)</span></li>
            <li>Powerful OOP facilities <span class="quiet">for extending existing classes</span></li>
        </ul>
    </div>

    <div class="no-break">
        <h3>Performance Features</h3>

        <ul>
            <li>Hardware acceleration on mobile <span class="quiet"> makes it feel as smooth as native apps</span></li>
            <li>Utilizing CSS3 features <span class="quiet">to make panning and zooming really smooth</span></li>
            <li>Smart polyline/polygon rendering <span class="quiet">with dynamic clipping and simplification makes it very fast</span></li>
            <li>Modular build system<span class="quiet"> for leaving out features you don't need</span></li>
            <li>Tap delay elimination on mobile</li>
        </ul>
    </div>

    <div class="no-break">
        <h3>Map Controls</h3>

        <ul>
            <li>Zoom buttons</li>
            <li>Attribution</li>
            <li>Layer switcher</li>
            <li>Scale</li>
        </ul>
    </div>


    <div class="no-break">
        <h3>Browser Support</h3>

        <h4>Desktop</h4>

        <ul>
            <li>Chrome</li>
            <li>Firefox</li>
            <li>Safari 5+</li>
            <li>Opera 12+</li>
            <li>IE 7&ndash;11</li>
        </ul>
    </div>

    <div class="no-break">
        <h4>Mobile</h4>

        <ul>
            <li>Safari for iOS 7+</li>
            <li>Android browser 2.2+,&nbsp;3.1+,&nbsp;4+</li>
            <li>Chrome for mobile</li>
            <li>Firefox for mobile</li>
            <li>IE10+ for Win8 devices</li>
        </ul>
    </div>

    <div class="no-break">
        <h3>Misc</h3>

        <ul>
            <li>Extremely lightweight</li>
            <li>No external dependencies</li>
        </ul>
    </div>
</div>

<p>If you find some feature really missing in Leaflet, first check if there's a <a href="plugins.html">plugin for it</a>. If not, please vote for the feature on the <a href="https://leaflet.uservoice.com">Leaflet UserVoice page</a>.</p>

<h2>Getting Involved</h2>

<p>Let's create the best mapping library that will ever exist! Leaflet is developed by <a href="http://agafonkin.com">Vladimir Agafonkin</a> of <a href="http://mapbox.com">Mapbox</a> with a team of dedicated <a href="https://github.com/Leaflet/Leaflet/graphs/contributors">contributors</a>.
<a href="https://github.com/Leaflet/Leaflet">Pull requests</a> are always welcome.
However, there are many more ways to get involved with the development of Leaflet.</p>

<p>You can help the project tremendously by discovering and <a href="https://github.com/Leaflet/Leaflet/blob/master/CONTRIBUTING.md#reporting-bugs">reporting bugs</a>, <a href="https://github.com/Leaflet/Leaflet/blob/master/CONTRIBUTING.md#improving-documentation">improving documentation</a>,
helping others on <a href="https://stackoverflow.com/questions/tagged/leaflet">Stack Overflow</a>, <a href="https://gis.stackexchange.com/questions/tagged/leaflet">GIS Stack Exchange</a>
and <a href="https://github.com/Leaflet/Leaflet/issues">GitHub issues</a>,
showing your support for your favorite feature suggestions on <a href="http://leaflet.uservoice.com">Leaflet UserVoice page</a>,
tweeting to <a href="http://twitter.com/LeafletJS">@LeafletJS</a>
and spreading the word about Leaflet among your colleagues and friends.</p>

<p>Check out the <a href="https://github.com/Leaflet/Leaflet/blob/master/CONTRIBUTING.md">contribution guide</a> for more information on getting involved with Leaflet development.</p>

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<script>
	var osmUrl = 'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
		osmAttrib = '&copy; <a href="http://openstreetmap.org/copyright">OpenStreetMap</a> contributors',
		osm = L.tileLayer(osmUrl, {maxZoom: 18, attribution: osmAttrib});

	var map = L.map('map').setView([51.505, -0.159], 15).addLayer(osm);

	L.marker([51.504, -0.159])
		.addTo(map)
		.bindPopup('A pretty CSS3 popup.<br />Easily customizable.')
		.openPopup();
</script>