Example of exporting a map as a PNG image.
<!DOCTYPE html> <html> <head> <title>Export map example</title> <script src="https://code.jquery.com/jquery-1.11.2.min.js"></script> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css"> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script> <link rel="stylesheet" href="http://openlayers.org/en/3.8.1/css/ol.css" type="text/css"> <script src="http://openlayers.org/en/3.8.1/build/ol.js"></script> </head> <body> <div class="container-fluid"> <div class="row-fluid"> <div class="span12"> <div id="map" class="map"></div> <div id="no-download" class="alert alert-error" style="display: none"> This example requires a browser that supports the <a href="http://caniuse.com/#feat=download">link download</a> attribute. </div> <a id="export-png" class="btn" download="map.png"><i class="icon-download"></i> Export PNG</a> </div> </div> </div> <script> var map = new ol.Map({ layers: [ new ol.layer.Tile({ source: new ol.source.OSM() }), new ol.layer.Vector({ source: new ol.source.Vector({ url: 'data/geojson/countries.geojson', format: new ol.format.GeoJSON() }) }) ], target: 'map', controls: ol.control.defaults({ attributionOptions: /** @type {olx.control.AttributionOptions} */ ({ collapsible: false }) }), view: new ol.View({ center: [0, 0], zoom: 2 }) }); var exportPNGElement = document.getElementById('export-png'); if ('download' in exportPNGElement) { exportPNGElement.addEventListener('click', function(e) { map.once('postcompose', function(event) { var canvas = event.context.canvas; exportPNGElement.href = canvas.toDataURL('image/png'); }); map.renderSync(); }, false); } else { var info = document.getElementById('no-download'); /** * display error message */ info.style.display = ''; } </script> </body> </html>