Show all categories

https://mydomain.com/?post_type=post

Specific category URL

Default URL

https://yourdomain.com/category/your-category-name

Custom URL

You can alter it in WP Admin > Settings > Permalinks > Category base

Removing the default “/category/” section altogether

Change the “Category base” setting to a period (.). This will remove the default category base, resulting in cleaner URLs like this:

https://yourdomain.com/your-category-name

If your “Category base” has “blog/” forced in front of it

We found this on some of our old sites. Changing Permalink structure to Plain and then back again to our custom structure fixed it (removed the fixed “blog/” element)