WordPress Yoast SEO Plugin and opengraph tags

2 comments

1. Looking through the code of Yoast SEO, I found many “undocumented” filters you can use. Here is a list extracted from it:

   wpseo_opengraph_author_facebook – Allow developers to filter the
   Yoast SEO post authors facebook profile URL
   wpseo_opengraph_admin – Allow developer to filter the fb:admins
   string put out by Yoast SEO wpseo_opengraph_title – Allow changing
   the title specifically for OpenGraph
   wpseo_opengraph_url – Allow
   changing the OpenGraph URL wpseo_opengraph_type – Allow changing the
   OpenGraph type of the page
   wpseo_opengraph_desc – Allow changing
   the OpenGraph description
   wpseo_opengraph_site_name – Allow
   changing the OpenGraph site name wpseo_opengraph_show_publish_date –
   Allow showing publication date for other post types
   wpseo_opengraph_image_size – Allow changing the image size used for
   OpenGraph sharing wpseo_opengraph_image – Allow changing the
   OpenGraph image.
   wpseo_twitter_card_type – Allow changing the
   Twitter Card type as output in the Twitter card by Yoast SEO
   wpseo_twitter_metatag_key – Make the Twitter metatag key
   filterable
   wpseo_twitter_description – Allow changing the
   Twitter description as output in the Twitter card by Yoast SEO
   wpseo_twitter_title – Allow changing the Twitter title as output in
   the Twitter card by Yoast SEO wpseo_twitter_site – Allow changing
   the Twitter site account as output in the Twitter card by Yoast
   SEO
   wpseo_twitter_image – Allow changing the Twitter Card
   image
   wpseo_twitter_image_size – Allow changing the Twitter Card
   image size wpseo_twitter_creator_account – Allow changing the
   Twitter account as output in the Twitter card by Yoast SEO

   EDIT:
   A few things to remember:
   Facebook scraps the url in the og:url tag (even if it’s not the actual url you give it).
   If you return false from the wp filter function, Yoast will not display that tag, so you can use it like that, and then manually add the tag somewhere else in your code where you need…

   For example, here is some code to disable description and image tags for og and twitter:

    function yoast_og_tag ($tag) {
       return false;
    }
    $yfilters = [ 'wpseo_opengraph_desc','wpseo_opengraph_image','wpseo_twitter_description','wpseo_twitter_image' ];
    foreach ($yfilters as $k => $f) {
         add_filter( $f, 'yoast_og_tag', 10, 1 );
    }
   

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2. Yoast make various filters available. See their WordPress SEO API Docs article for a list of them. So, for example, if you wanted to change the opengraph type of a blog post with ID 86, you could use the wpseo_opengraph_type filter:

   function modify_opengraph_type_p86( $type ) {
       if ( is_single( 86 ) )
           $type = 'video';
   
       return $type;
   }
   add_filter( 'wpseo_opengraph_type', 'modify_opengraph_type_p86' );
   

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