Just as an illustration of what one is up against trying to get a method that works for everybody, you can find descriptions of the available Windows keyboards (I think I count 138 versions) at Windows Keyboard Layouts.

The page indicates "Internet Explorer Required" and the keyboards appear (one at a time) in a popup, so you must enable popups to see them.

Each key is a separate image/frame(?) and displays the Unicode character number when you hover over it, so if you "save picture" you'll only get one key, wherever you right clicked. If you want a picture of the whole keyboard, use Alt-PrtScn and paste into an image program.

John