Here is how to convert page to post in WordPress and vice versa.
You don't need any crazy paid plugin to do this. All you have to do is download the Post Type Switcher free plugin right inside WordPress.
Just install it as usual, and the plugin will appear on every post and page "publish" tab. Simply just select "edit" and change the type.
When To Use Page?
Sometimes people create pages that are meant to be post, and people frequently get this wrong when they first start a website.
Pages are used to establish content such as sales pages, category pages, about us, optin box, and other static pages. Users can also structure pages under an organized hierarchy to ensure optimal SEO juice flow from the home page down to the rest of the website.
For the most part, pages don't have publish date, author, or tags associated with them. Posts have an author and published date, while pages do not.
When To Use Post?
Posts are more for timely content such as news articles shared on social media. They rank on the search engine the same way as pages, posts are organized using categories and tags, while pages are hierarchical and organized as child and parent pages.
Will URL Permalink Structure Change When Switch A Page To Post?
Yes. The URL permalink from a previously established child page will change when being switched to post.
Please check your URL structure before performing the switch to prevent search engine deindexing.
It's EXTREMELY important to add 301 redirect URL link to a page you want to switch to post without losing search engine ranking.
The easiest way inside WordPress is to use Yoast SEO plugin. It's easy and much more organized than editing codes yourself.