The URLs of the content you publish on your WordPress website are known as permalinks. Permalinks are what people enter into their browser address bar to view one of your pages (they are the permanent link to a single page). They are also what search engines and other websites use to link to your website. Due to this, they are very important.
You can change the structure of your permalinks at any time. However doing this will change the URL of your pages. This can cause your search engine traffic and referral traffic to drop considerably as visitors are presented with 404 page errors instead of the page they want to view.
With this plugin, you can change permalinks in WordPress without blowing up your site.
Meet: Permalink Manager Pro
Edit WordPress permalinks anyway you want! Permalink Manager is an SEO-friendly URL editor for WordPress. It includes a set of tools that helps to customize the permalinks. You can use it to edit URL addresses of posts, pages, categories, and tags. It works well with WooCommerce, custom post types, and taxonomies.
Be sure to checkout the Permalink Manager Pro lifetime deal while it’s available as a one time price.