Joomla extensions. Info and link for download for Extension:Qlue - Broken Link Checker ( BETA ) This free component will scan your entire website for all internal and external links. It will then check all links for http error codes (400, 500 ect) and lists them for you to update. This component is easy to install and will require Joomla! 1.5 and mootools 1.1 to work.