you can try
it will give Image size
var img = new Image(); img.onload = function() { alert(this.width + 'x' + this.height); } img.src = 'http://www.google.com/intl/en_ALL/images/logo.gif'; open using Image size
var myWindow = window.open("", "MsgWindow", "width=Image's width, height=Image's height");

You can programmatically get the image and check the dimensions using Javascript...
<!-- begin snippet: js hide: false console: true babel: false --> <!-- language: lang-js --> var img = new Image(); img.onload = function() { alert(this.width + 'x' + this.height); } img.src = 'http://www.google.com/intl/en_ALL/images/logo.gif'; <!-- end snippet -->
This can be useful if the image is not a part of the markup.