If you’ve been posting post thumbnails but one thumbnail is not enough, do you know that you can add multiple thumbnails? From just reading about it, you may feel that it looks a bit hard but the truth is, this is easy.
However, you need to install a few prerequisites first. The first thing you do is install and activate the Multiple Post Thumbnails plugin. Once its activated, add the following code in your theme’s functions.php file:
if (class_exists(‘MultiPostThumbnails’)) {
new MultiPostThumbnails(array(
‘label’ => ‘Secondary Image’,
‘id’ => ‘secondary-image’,
‘post_type’ => ‘post’
) );
}
Additional instructions here: http://www.wpbeginner.com/plugins/how-to-add-multiple-post-thumbnails-featured-images-in-wordpress/