CasperJS sample

screenshot.js

var props = {
  // Chrome
  pc:{
    ua: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36",
    //viewport: { width: 2560, height: 1440 }
    viewport: { width: 640, height: 480 }
  },
  // iPhone 5, iOS 8.0.2
  mobile: {
    ua: "Mozilla/5.0 (iPhone; CPU iPhone OS 8_0_2 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12A405 Safari/600.1.4",
    viewport: { width: 640, height: 1136 }
  }
};

var casper = require('casper').create();

//var url = casper.cli.args[0];
var prop = casper.cli.args[1] == "mobile" ? props.mobile : props.pc;
casper.start();
casper.userAgent(prop.ua);
casper.zoom(1);
casper.viewport(prop.viewport.width, prop.viewport.height);

var urls = [
	  "http://www.yahoo.co.jp"
	, "http://google.com"
	, "http://ja.wikipedia.org/"
	, "https://github.com/"
];
urls.map(function(url,idx){
	casper.then(function(){
		casper.open( url ).then(function(){
			console.log( "capturing[" + idx + "]: " + url );
			this.capture( idx + '.png' );
		});
	});
});

casper.run();