how to create a sharable wordpress post resulting in a animated GIF in facebook having link-back to your site

Question

How to share a wordpress post having an animated gif as thumbnail image on facebook and, the new post on facebook, having a link back to the site (not the image)?

Wordpress uses "Yoast Wordpress SEO" plugin.

Answer 1

Simply set the canonincal url of the post to the image.

function custom_canonical($original=null){
    global $post;
    $size = 'downsized-large'; // your preferred size
    if (has_post_thumbnail() == false) {
        return $original;
    }
    $url = get_the_post_thumbnail_url($post, $size);
    if (preg_match('/.gif$/i', $url)==false) {
        return $original;
    }
    return $url;
}

add_filter('wpseo_canonical', 'custom_canonical',1);

Add at the end of "functions.php" under the theme dir.