WP Enforce Featured Image
Enforce certain post types to be published with a featured image with certain dimensions if specified.
Requirements
WordPress 4.4+
Credits
This plugin is based on Force Featured Image plugin by XWP.
Usage
Write an another plugin file, or paste the example below in your theme functions.php
file:
if ( class_exists( 'Enforce_Featured_Image' ) ) {
Enforce_Featured_Image::enforce_on_post_type( 'post', array(
'min_width' => 640,
'min_height' => 300,
'force_on_published_posts' => false,
) );
}