Analysis of Custom Meta Box Content

Hi Paul,

There are a couple of plugins available for this purpose, for example this one: https://www.ads-software.com/plugins/ns-seo-custom-fields/

It can also be done by adding some code to your theme’s functions.php file, see an example here: https://wp-types.com/forums/topic/seo-by-yoast-doesnt-find-my-custom-post-type-fields/#post-300261

Hope that helps