How to Add a Single Post, Page, or Custom Content Type to a Popup

Any content that is not on a post or page is considered 'remote content'. The content can exist elsewhere on the same site, or on another site.  The Remote Content plugin extension to Popup Maker allows plugin users to add that remote content into a popup container. The plugin extension is particularly useful when targeting all or part of another web page, especially content wrapped by an HTML <iframe> element. 

Sometimes, Popup Maker users simply want to display a single post, page, or custom post type from elsewhere on their site inside of a popup. The Remote Content (RC) plugin extension is certainly up to the task. But it's probably more than what that particular user requires for their situation. 

Here are some recommendations of free, third-party plugins available from the WordPress.org plugin repository that should work well with Popup Maker: 

Each works through the use of shortcode added into the content editor of Popup Maker.   The Support page at Wordpress.com describes a shortcode as:

...a WordPress-specific code that lets you do nifty things with very little effort. Shortcodes can embed files or create data objects in just one line that would normally require lots of complicated, ugly code.  Shortcode = shortcut.

Please keep in mind that every site that uses Popup Maker is built and hosted differently. Test out one or more of the plugins listed above with your site, and see which one works best or that you prefer.  Problems that arise while using any of plugins listed above should be referred to the respective plugin developer.