Add this on function.php
add_filter('manage_posts_columns', 'add_img_column'); add_filter('manage_posts_custom_column', 'manage_img_column', 10, 2); function add_img_column($columns) { $columns['img'] = 'Featured Image'; return $columns; } function manage_img_column($column_name, $post_id) { if( $column_name == 'img' ) { echo get_the_post_thumbnail($post_id, 'thumbnail'); } return $column_name; }