fariborzasgarpour

In WordPress, when you create a main category and create a category as its child, connect some articles to the child category and then open that category, you will see that article in the list of that category. 
So far no problem and everything is working properly. 
Now, if you add a word in the browser address between the main category and the child category, it will still display the same list if that category does not exist and it should be referred to the 404 page.
example.com/parent_category/child_category/ —> post1 , post2 
example.com/parent_category/random_text/child_category/ —->post1 , post2
after install
example.com/parent_category/child_category/ —> post1 , post2 
example.com/parent_category/random_text/child_category/ —> 404
With this plugin, this problem will be solved and a 404 page will be displayed for addresses that do not exist. 
This problem will be very useful for colleagues who work in the field of SEO.

Taxonomy slug fixer

fix the middle slugs of parent category and child category.

Amit Sonkhiya

K.K.Agarwal

Gutenberg Editor already maintains the parent-child relationship when you select a category. So the child doesn’t move at the top in the category meta box. So this plugin isn’t required if you’re using the Gutenberg Editor.
Categories in Hierarchical Order plugin applies to WordPress Classic Post Editor only.
This plugin contains functionality to let you maintain default hierarchical order of categories when you select and save them for a post in your WordPress Admin Classic Post Editor.
The selected category/categories, to which a post belongs, are by default pushed at the top in the Category tab while saving the post. Whereas activating Categories in Hierarchical Order plugin will keep the position of selected category/categories unchanged as per their parent/child relationship.
For support, use support page available here or visit <a href="https://www.astech.solutions/wordpress-javascript-jquery-plugins/categories-hierarchical-order/" rel="nofollow ugc">the page</a> at our official website. A <a href="https://github.com/as-tx/categories-hierarchical-order" rel="nofollow ugc">GitHub repo</a> is also there to post issues, contribution and feature requests.

Categories in Hierarchical Order

Does exactly what you expect from this plugin. Nice!

Works great!

Does exactly what should be the default option in Wordpress, great! Sorely needed if you have many categories (possibly with very similar names) and rely on a complex hierarchy.

Great!

Perfect

Why is this not part of the WordPress core yet? This plugin fixed my ugly looking category structure! Thanks guys!

Brilliant!

Categories in Hierarchical Order plugin maintains the hierarchical order of categories list in the Category tab under your WordPress Admin Post Editor …

Taxonomy slug fixer vs Categories in Hierarchical Order