Change the pattern permalink of pages for best seo results, and delete the “category” prefix. If page contains childs, its permalink pattern will be %pagename%/ If not, it will be %pagename%.html If you haven’t change the categories prefix, seo url pages delete the default value (category). Otherwise, it does nothing. Support http://www.ajcrea.com/plugins/wordpress/plugin-wordpress-de-jolies-urls-pour-vos-pages.html