<meta name="twitter:card" content="summary" /> <meta property="og:site_name" content="<?php echo esc_attr(get_bloginfo('name')); ?> " /> <meta property="og:title" content="<?php echo esc_attr($slide_title); ?> " /> <meta property="og:url" content="<?php echo esc_url($slide->permalink()); ?> " /> <meta property="og:type" content="presentation:slide" /> <?php $bg_image = $slide->get_bg_image(); if ('' !== $bg_image && 'noimage' !== $bg_image) { ?> <meta property="og:image" content="<?php echo esc_url($bg_image); ?> " /> <?php } if (!empty($slide->seo_description)) { ?> <meta property="og:description" content="<?php echo esc_attr($slide->seo_description); ?> " /> <?php