Page Sitemap Image URLS not showing CDN URL After Adding Recommended Code

If pages are created by some page builder then it’s possible that filter wpseo_xml_sitemap_img_src can’t work. I think that you could try filter wpseo_sitemap_urlimages with higher priority.

Thank you for the input! I tried swapping the code, but I am still having the issue.

It’s strange because we have other installs set up similarly with the same code, lugins, and theme, and they work as expected. I did try troubleshooting by turning off the active theme (Avada) to see if it was causing the problem; however, even when I turned it off and used the basic 2019 theme I still had the same issue.

We’re also hosting on WPEngine so I reached out to them, but they couldn’t find the issue. We do also use Cloudflare as well as wp rocket and imagify. I thought imagify could possibly be the issue, but we have it turned on for our other site with the same code and it works.

If page is created by fusion builder (it’s separate plugin) then method parse_html_images can’t find all images. Fusion builder uses filter wpseo_sitemap_urlimages to “extract images” from their shortcodes (see fusion-builder/inc/lib/inc/class-fusion-images.php – method extract_img_src_for_yoast).

Arguments for these filters (wpseo_xml_sitemap_img_src and wpseo_sitemap_urlimages) are different. So, you need to create new PHP code, not only replace filter name (and you need to add higher priority for the filter).

I could create PHP snippet, but I can’t do it before next week.

I’ve created PHP snippet which will run after fusion builder parsing.

/**
 * Change image src attributes after parsing all images.
 */ 
add_filter( 'wpseo_sitemap_urlimages', function( $urlimages ) {
	foreach( $urlimages as $url_key => $url ) {
		if ( ! empty( $url['src'] ) && is_string( $url['src'] ) ) {
			$urlimages[ $url_key ]['src'] = preg_replace( '#^https://markartall.com#', 'https://cdn.markartall.com', $url['src'], 1 );
		}
	}

	return $urlimages;
}, 20 );

I prefer preg_replace instead of str_replace because previous code will replace only begin of an URL.

That works! Thank you so much for your help! Sorry for the misunderstanding. Php is not a language I’m very familiar with.

I really appreciate it.