অ্যান্ড্রয়েড অ্যাড-অন

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

View Dependencies adds a tab to the Page Info window, in which it lists all the files which were loaded to show the current page.