Joomla Web Site: Editing a Web Page in Joomla!. Learn how to edit an existing web page using Joomla! Your site must have been built using Joomla! for this video to help you. You will learn here how to log in to your Joomla! account, how to locate a web page (called “article” in Joomla!-speak), how to add text, edit and format text, add an image and how to create a Page Break which will divide a long web page into digestible pages.