example of taking a screenshot of a web page using selenium-webdriver

selenium_shooter.js

#!/usr/bin/env node
'use strict';
var fs = require('fs');
var when = require('when');
var webdriver = require('selenium-webdriver');

exports.takeShot = function(url, outputFilePath) {

  return when.promise(function(resolve, reject) {

    var driver = new webdriver.Builder()
      .withCapabilities({'browserName': 'chrome'}).build();

    new webdriver.WebDriver.Window(driver).setSize(1024, 865);

    driver.get(url);

    driver.wait(function() {
      if (driver.isElementPresent({id: 'url2png-cheese'})) {
        return true;
      } else {
        reject(new Error('Cheese not found'));
        return false;
      }
    }, 1000, 'Timed out waiting for page content to load.')
    .then(function() {
      setTimeout(function() {
        driver.takeScreenshot()
        .then(function(data) {
          fs.writeFileSync(outputFilePath, data, 'base64');
          driver.quit()
          .then(function(){
            resolve(true);
          });
        });
      }, 5000); // ugh: still have to wait for background image ... why?
    });
  });
};