PhantomJS Renderer

renderer.js

#!/usr/bin/env phantomjs

var args = require('system').args;

var URL = args[1];
var FILE = args[2];
var W = args[3];
var H = args[4];

if (URL && FILE && W && H) {

	var page = require('webpage').create();

	page.viewportSize = { width: W, height: H };
	page.clipRect = { top: 0, left: 0, width: W, height: H };

	page.open(URL, function() {
		page.render(FILE);
		phantom.exit();
	});

} else {
	console.error('Usage: "./render.js site.com file.png W H"');
	phantom.exit();
}