tstafford

Adds a shortcode to include the content of a file or URL inside of a WordPress page or post.
Example:
Include the following in a page or post: 
[include_file url=http://example.org/somefile.txt]
This would include the content of http://example.org/somefile.txt into your page or post.

include-file

Adds a shortcode to include the content of a file or URL inside of a WordPress page or post.

gr8nilay

This plugin will include your created custom fields through Custom Field Suite plugin for Yoast SEO Analysis Calculation.
Read this first: 
This is only for pages not the custom post types or other default post types.

Boost Yoast Analysis CFS

This plugin will include your custom fields ( created with Custom Field Suite plugin ) for Yoast SEO Analysis Calculation

include-file vs Boost Yoast Analysis CFS