--- layout: tutorial_v2 title: Markers With Custom Icons --- ## Markers With Custom Icons In this tutorial, you'll learn how to easily define your own icons for use by the markers you put on the map. {% include frame.html url="example.html" %} ### Preparing the images To make a custom icon, we usually need two images --- the actual icon image and the image of its shadow. For this tutorial, we took the Leaflet logo and created four images out of it --- 3 leaf images of different colors and one shadow image for the three:
Note that the white area in the images is actually transparent. ### Creating an icon Marker icons in Leaflet are defined by [L.Icon](../reference.html#icon) objects, which are passed as an option when creating markers. Let's create a green leaf icon: var greenIcon = L.icon({ iconUrl: 'leaf-green.png', shadowUrl: 'leaf-shadow.png', iconSize: [38, 95], // size of the icon shadowSize: [50, 64], // size of the shadow iconAnchor: [22, 94], // point of the icon which will correspond to marker's location shadowAnchor: [4, 62], // the same for the shadow popupAnchor: [-3, -76] // point from which the popup should open relative to the iconAnchor }); Now putting a marker with this icon on a map is easy: L.marker([51.5, -0.09], {icon: greenIcon}).addTo(map); {% include frame.html url="example-one-icon.html" %} ### Defining an icon class What if we need to create several icons that have lots in common? Let's define our own icon class containing the shared options, inheriting from `L.Icon`! It's really easy in Leaflet: var LeafIcon = L.Icon.extend({ options: { shadowUrl: 'leaf-shadow.png', iconSize: [38, 95], shadowSize: [50, 64], iconAnchor: [22, 94], shadowAnchor: [4, 62], popupAnchor: [-3, -76] } }); Now we can create all three of our leaf icons from this class and use them: var greenIcon = new LeafIcon({iconUrl: 'leaf-green.png'}), redIcon = new LeafIcon({iconUrl: 'leaf-red.png'}), orangeIcon = new LeafIcon({iconUrl: 'leaf-orange.png'}); You may have noticed that we used the `new` keyword for creating LeafIcon instances. So why do all Leaflet classes get created without it? The answer is simple: the real Leaflet classes are named with a capital letter (e.g. `L.Icon`), and they also need to be created with `new`, but there are also shortcuts with lowercase names (`L.icon`), created for convenience like this: L.icon = function (options) { return new L.Icon(options); }; You can do the same with your classes too. OK, lets finally put some markers with these icons on the map: L.marker([51.5, -0.09], {icon: greenIcon}).addTo(map).bindPopup("I am a green leaf."); L.marker([51.495, -0.083], {icon: redIcon}).addTo(map).bindPopup("I am a red leaf."); L.marker([51.49, -0.1], {icon: orangeIcon}).addTo(map).bindPopup("I am an orange leaf."); That's it. Now take a look at the [full example](example.html), the [`L.Icon` docs](../../reference.html#icon), or browse [other examples](../../examples.html).