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stephanbogner/index.html

Created October 26, 2021 08:11
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Download map canvas as png from Mapbox GL JS
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>Display a map</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.css' rel='stylesheet' />
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<style>
#map {
margin: auto;
width: 400px;
height: 400px;
}
</style>
</head>
<body>
<div id='map'></div>
<a id="downloadLink" href="" download="map.png">Download ↓</a>
<div id="image"></div>
<script>
mapboxgl.accessToken = '{your-access-token-here}';
/* The important part is line 33: preserveDrawingBuffer: true */
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v9',
center: [-74.50, 40],
zoom: 9,
preserveDrawingBuffer: true
});
$('#downloadLink').click(function() {
var img = map.getCanvas().toDataURL('image/png')
this.href = img
})
</script>
</body>
</html>
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