I created this for a client. It worked great last summer in offline mode. It's buggy and no longer compatible with current wp and joomla. It converts joomla, including images and media, into wordpress. It's a web-based thing with a gui easy enough for any idiot to figure out. If the version of joomla you are updating is not the most recent ones, the only modifications would be to improve the less than perfect function library and app design and to modify to work with most recent wordpress versions. I teach philosophy at a university and am not a coder (currently) so the project was something I did on the side so please excuse the code quality in places.