Skip to content

Display a remote SVG symbol

Uses the 'styleimagemissing' event to load a remote image and use it.

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Display a remote SVG symbol</title>
    <meta property="og:description" content="Uses the 'styleimagemissing' event to load a remote image and use it." />
    <meta charset='utf-8'>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel='stylesheet' href='https://unpkg.com/maplibre-gl@5.9.0/dist/maplibre-gl.css' />
    <script src='https://unpkg.com/maplibre-gl@5.9.0/dist/maplibre-gl.js'></script>
    <style>
        body { margin: 0; padding: 0; }
        html, body, #map { height: 100%; }
    </style>
</head>
<body>
<div id="map"></div>
<script>
    const map = new maplibregl.Map({
        container: 'map', // container id
        style: 'https://demotiles.maplibre.org/style.json', // style URL
        center: [0, 0], // starting position [lng, lat]
        zoom: 1, // starting zoom
        maplibreLogo: true
    });
    map.on('load', () => {
        const existingImages = {};
        map.on('styleimagemissing', async (e) => {
            if (existingImages[e.id]) {
                return;
            }
            existingImages[e.id] = true;
            const response = await fetch(e.id);
            const svgText = await response.text();
            const svg = 'data:image/svg+xml;charset=utf-8,' + encodeURIComponent(svgText);
            const image = new Image();
            const promise = new Promise((resolve) => {
                image.onload = resolve;
            });
            image.src = svg;
            await promise; // Wait for the image to load
            map.addImage(e.id, image);
        });

        map.addSource('point', {
            'type': 'geojson',
            'data': {
                'type': 'FeatureCollection',
                'features': [
                    {
                        'type': 'Feature',
                        'geometry': {
                            'type': 'Point',
                            'coordinates': [0, 0]
                        },
                    },

                ]
            }
        });
        map.addLayer({
            'id': 'svg-symbol',
            'type': 'symbol',
            'source': 'point',
            'layout': {
                'icon-image': 'https://maplibre.org/maplibre-gl-js/docs/assets/logo.svg',
                'icon-overlap': 'always',
                'text-overlap': 'always'
            }
        });
    });
</script>
</body>
</html>