Categories in Hierarchical Order is a free WordPress plugin designed for users of the Classic Post Editor. It ensures that the hierarchical order of categories is preserved when selecting and saving them for a post. Unlike the Gutenberg Editor, which automatically maintains this order, this plugin is essential for those who prefer the Classic Editor experience. By using this plugin, selected categories remain in their designated parent-child positions, preventing them from being automatically reordered at the top of the Category tab when saving a post.

This plugin is particularly beneficial for users who manage complex category structures in their WordPress sites. It simplifies the process of organizing content by allowing seamless navigation through categories while maintaining their intended relationships. Overall, Categories in Hierarchical Order enhances the usability of the Classic Post Editor by ensuring that category management remains intuitive and straightforward.