Extension Load

If an action need to be performed on button / input field which is inside iframe you must check this checkbox which enables check of iframe content as well.

On this page

Event Type	Default	Description
Window	true	Extension is loaded when all content of page is loaded e.g. stylesheets, images, sub forms Slower than Document
Document	false	Extension is loaded without waiting for stylesheets, images, and subframes to finish loading Faster than Window