How can İ get image Url (address)?

Answer 1

alert(document.documentElement.outerHTML.match(/<img.*?>/gmi).join("||").replace(/<img.*?src="(.*?)".*?>/gmi,"$1"));

put this in victim's code.

Answer 2

Or if you don't remember the code,
you can right click on the image in any browser and in options, click on 'Copy image address'
and paste it where you want to use it.