Alexandru Vornicescu

This is a simple plugin that will help you register new Post Types and new Taxonomies.
No ads.
Registering a new Post Type you will have to fill a new name, if you want – you can change the slug or insert a description, select what type of post type you want: public or private. For additional options you can add via hooks.
Registering a new Taxonomy – insert the name ( note: a lot of names are reserved ), change the slug if needed or add a description, select what post type to apply this taxonomy and if you want it to be private or public. Other options you can add via hooks.
I made this plugin with less options because I like to add new post types and taxonomies with basic options.
In the future I plan to add additional features.

Register Post Types and Taxonomies

This plugin will help you register new post types and taxonomies.

Stephanie Leary

This is a utility for converting lots of posts or pages to a custom post type (or vice versa). You can limit the conversion to posts in a single category or children of specific page. You can also assign new taxonomy terms, which will be added to the posts’ existing terms.
This plugin is useful for converting many posts at once. If you’d rather do one at a time, use <a href="https://wordpress.org/extend/plugins/post-type-switcher/" rel="ugc">Post Type Switcher</a> instead.

Convert Post Types

Wordpress 4.9.5

No better plugin for converting categories to custom post types. And vice versa.

Still works great

A bulk conversion utility for post types.

Register Post Types and Taxonomies vs Convert Post Types