Feed Post Thumbnail Plugin

Yep, we add the proper XML namespaces for that. Everything just works as expected!

Yes, the plugin has two filters available for this:

// Filters the size on media:content tag. Defaults to 'full'. add_filter( 'wp_feed_post_thumbnail_image_size_full', function( $size ) { return 'large'; // Return any registered image size. }, 10, 1 ); // Filters the size on the media:thumbnail tag. Defaults to 'thumbnail'. add_filter( 'wp_feed_post_thumbnail_image_size_thumbnail', function( $size ) { return 'medium'; // Return any registered image size. }, 10, 1 ); 

Yes, the plugin has two filters available for this:

// Filters the featured image attachment post object. add_filter( 'wp_feed_post_thumbnail_image', function( $thumbnail ) { return ''; // Return an empty string or another attachment post object. }, 10, 1 ); // Filters the array of attachment post objects. Defaults to featured image post object if exists. add_filter( 'wp_feed_post_thumbnail_images', function( $images ) { $attachment_id = '123'; $images[] = get_post( $attachment_id ); // Additional attachment post object. return images; }, 10, 1 ); 

Yes, there is a filter for each of these things:

// Filters the title on the media:title tag. Defaults to attachment title. add_filter( 'wp_feed_post_thumbnail_title', function( $title ) { return 'Override title'; // Return any plain text. }, 10, 1 ); // Filters the text on the media:description tag. Defaults to attachment description. add_filter( 'wp_feed_post_thumbnail_description', function( $description ) { return 'Same description for all images'; // Return any plain string. }, 10, 1 ); // Filters the name of the author on the media:copyright tag. Defaults to attachment author. add_filter( 'wp_feed_post_thumbnail_author', function( $author_name ) { return 'Matt'; // Return any plain string. }, 10, 1 );