Fix: Custom Post Type Not Showing in Auto Featured Image

This article explains why a custom post type (such as a WooCommerce product, portfolio item, or event) may be absent from the Auto Featured Image settings list and how to add the missing thumbnail support so auto-generation can be enabled for it.

Issue: Custom Post Type Not Showing

Possible Causes:

❌ CPT not registered with thumbnail support ❌ CPT registered after plugin loads ❌ CPT is private/not public

Solutions:

Solution 1: Add Thumbnail Support Manually

Add to theme's functions.php:

add_action('init', function() {
    add_post_type_support('your_cpt_name', 'thumbnail');
}, 11); // Priority 11 ensures it runs after CPT registration

Replace your_cpt_name with actual CPT slug.

Solution 2: Modify CPT Registration

If you control CPT registration:

register_post_type('portfolio', array(
    'supports' => array(
        'title',
        'editor',
        'thumbnail', // ← Add this
        'excerpt'
    ),
    // ... other args
));

Solution 3: Force Enable via Filter

add_filter('afi_enabled_post_types', function($post_types) {
    $post_types[] = 'your_cpt_slug';
    return $post_types;
});