Copiez simplement le code ci-dessous dans le fichier functions.php de votre thème:
//Adding the Open Graph in the Language Attributes function add_opengraph_doctype( $output ) { return $output . ' xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml"'; } add_filter('language_attributes', 'add_opengraph_doctype'); //Lets add Open Graph Meta Info function insert_fb_in_head() { global $post; if ( !is_singular()) //if it is not a post or a page return; echo '<meta property="fb:app_id" content="Your Facebook App ID" />'; echo '<meta property="og:title" content="' . get_the_title() . '"/>'; echo '<meta property="og:type" content="article"/>'; echo '<meta property="og:url" content="' . get_permalink() . '"/>'; echo '<meta property="og:site_name" content="Your Site NAME Goes HERE"/>'; if(!has_post_thumbnail( $post->ID )) { //the post does not have featured image, use a default image $default_image="http://example.com/image.jpg"; //replace this with a default image on your server or an image in your media library echo '<meta property="og:image" content="' . $default_image . '"/>'; } else{ $thumbnail_src = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'medium' ); echo '<meta property="og:image" content="' . esc_attr( $thumbnail_src[0] ) . '"/>'; } echo " "; } add_action( 'wp_head', 'insert_fb_in_head', 5 );
Prenez soin de remplacer certaines valeur par celles de votre site et le tour est joué!