Adding structured data to just 1 page

Hey peterolle,

Thank you for the inquiry.

You can use the wp_head or wp_footer hook to add the script to a specific page.

Example:

function ava_json_ld_mod() {
    /// replace placeholder slug-of-your-page with the actual slug or ID of the page
    if (is_page('slug-of-your-page')) { 
        ?>
        <script type="application/ld+json">
        {
          "@context": "https://schema.org/",
          "@id": "https://www.example.com/advancedCpp",
          "@type": "Course",
          "name": "Learn Advanced C++ Topics",
          "description": "Improve your C++ skills by learning advanced topics.",
          "publisher": {
            "@type": "Organization",
            "name": "CourseWebsite",
            "url": "https://www.examplecoursewebsite.com"
          },
          "provider": {
            "@type": "Organization",
            "name": "Example University",
            "url": "https://www.example.com"
          }
        }
        </script>
        <?php
    }
}
add_action('wp_head', 'ava_json_ld_mod');

Make sure to the adjust the value of the is_page conditional function.

Best regards,
Ismael