Image to dataurl Node.js

gistfile1.js

var request = require('request').defaults({encoding: null});
var imgUrl = 'URL_OF_IMG';
request.get(imgUrl, function (error, rep, body) {
  var data = '';
  if (!error && rep.statusCode === 200) {
    data = 'data:' + rep.headers['content-type'] + ';base64,' + new Buffer(body).toString('base64');
  }
  
  // Do something with data
});