Examples
Layers (30)
Extrude polygons for 3D indoor mappingDisplay buildings in 3DAdjust a layer's opacityAdd a 3D modelAnimate a lineAnimate a series of imagesAnimate a pointChange building color based on zoom levelChange the case of labelsDisplay HTML clusters with custom propertiesChange a layer's color with buttonsCreate and style clustersStyle circles with a data-driven propertyAdd a custom style layerStyle lines with a data-driven propertyDisplay and style rich text labelsAdd a pattern to a polygonAdd a new layer below labelsAdd a GeoJSON lineDraw GeoJSON pointsAdd a GeoJSON polygonCreate a heatmap layerAdd hillshadingCreate a gradient line using an expressionAdd multiple geometries from one GeoJSON sourceStyle ocean depth dataChange worldview of administrative boundariesShow and hide layersUpdate a choropleth layer by zoom levelVisualize population density

Use locally generated ideographs

Rendering Chinese/Japanese/Korean (CJK) ideographs and precomposed Hangul Syllables requires downloading large amounts of font data, which can significantly slow map load times. Use the localIdeographFontFamily setting to speed up map load times by using locally available fonts instead of font data fetched from the server. This setting defines a CSS 'font-family' for locally overriding generation of glyphs in the 'CJK Unified Ideographs' and 'Hangul Syllables' Unicode ranges. In these ranges, font settings from the map's style will be ignored in favor of the locally available font. Keywords in the fontstack defined in the map's style (light/regular/medium/bold) will be translated into a CSS 'font-weight'. When using this setting, keep in mind that the fonts you select may not be available on all users' devices. It is best to specify at least one broadly available fallback font class such as 'sans-serif'.

Mapbox GL unsupported
Mapbox GL requires WebGL support. Please check that you are using a supported browser and that WebGL is enabled.
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>Use locally generated ideographs</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.53.1/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.53.1/mapbox-gl.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<div id='map'></div>
<script>
mapboxgl.accessToken = '<your access token here>';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11',
center: [120.3049, 31.4751],
zoom: 12,
localIdeographFontFamily: "'Noto Sans', 'Noto Sans CJK SC', sans-serif"
});
</script>
</body>
</html>