How to display All Categories in the main page

It can be changed within index.php using the theme editor in the dashboard. You just have to search for the following codes;

wp_list_categories('show_count=0&title_li=&depth=1');

and add the “hide_empty” parameter to the list. Just put after depth=1 the &hide_empty=0

To make it look like this;

wp_list_categories('show_count=0&title_li=&depth=1&hide_empty=0');