Q:

Get image size using JQuery/ javascript

please tell me how to get image size of all images in the page using jquery or javascript

A:

The only size you can get is the visible size. clientWidth and clientHeight are two DOM properties which do this. Example:
var image = document.getElementById("id");
var width = image.clientWidth;
var height = image.clientHeight;

If you're using jQuery, you can simply use $.width and $.height:
var width = $("id").width();
var height = $("id").height();

So, to get the size of all images, loop them through:
$("img").each(function()
{
    console.log(this.width());
    console.log(this.height());
});

If you need the real size, please see this question Get the real width and height of an image with JavaScript? (in Safari/Chrome)

