fetch_image.js

gistfile1.js

var janitor = new Image(),
    info = {},
    test = $("#test"),
    images = [];


$.get("somewhere_that_fetch_the_page").complete(function (data) {
    var tmpImages = $(data.responseText).find("img");
    tmpImages.each(function (key, img) {
        var src = (img.getAttribute ? img.getAttribute("src") : false) || img.src;
        janitor.src = src;
        console.log(src, janitor.width, janitor.height);
    });
});