how to save a webpage (local file or one with a legit uri) in phantomjs (surprised this isn't in the example, may pr and see what happens)

screencap.js

/*jshint phantom: true, laxcomma: true*/
var system = require('system')
  ,page = require('webpage').create();

if (system.args.length === 1 || system.args.length < 3) {
    console.log('Try to pass some args when invoking this script!');
    phantom.exit();
}

var url = system.args[1];
var imageFileName = system.args[2];
console.log('opening: ' + url);
page.open(url, function() {
  console.log("saving as: " + imageFileName);
  page.render(imageFileName);
  phantom.exit();
});