Ecommerce Shopify WordPress Discussion

WordPress add_action('wp_head'… not working

I'm trying to preload an image by adding a <link rel="preload"... to the site head, with the following code: if (is_front_page()) { add_action('wp_head', function(){ ?> <link rel="preload" fetchpriority="high" as="image" href="/wp-content/uploads/2021/12/blog-bg-1536x907.jpeg" type="image/webp"> <?php }); } I've added this using the Code Snippets plugin. The snippet's active (on the front-end only) but it's not working. There's no errors in the debug log, I've tried changing the priority and even tried commenting out the is_front_page() conditional but nothing seems to work. Any ideas?
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