How to add rel=”sponsored” or rel=”nofollow” to all External links in WordPress?

Google announce sometime back in September 2019 about rel="sponsored" change into rel attribute.

rel=”sponsored”: Use the sponsored attribute to identify links on your site that were created as part of advertisements, sponsorships or other compensation agreements.

In order to add rel=”sponsored” metadata to link please add WordPress filters to functions.php file.

add_filter('the_content', 'crunchify_tips_on_add_rel_sponsored');

add_filter('the_excerpt', 'crunchify_tips_on_add_rel_sponsored');

Also, add below two functions PHP code to your WordPress theme’s functions.php file.

rel=”sponsored” code:

function crunchify_tips_on_add_rel_sponsored($content) {	
	return preg_replace_callback('/<a[^>]+/', 'crunchify_add_sponsored_all_external_links', $content);	
}

function crunchify_add_sponsored_all_external_links($crunchifyMatches) {
	
	$crunchifyLink = $crunchifyMatches[0];
	$crunchifySiteLink = get_bloginfo('url');

	if (strpos($link, 'rel') === false) {
	    $crunchifyLink = preg_replace("%(href=\S(?!$crunchifySiteLink))%i", 'rel="sponsored" $1', $crunchifyLink);
	} elseif (preg_match("%href=\S(?!$crunchifySiteLink)%i", $crunchifyLink)) {
	    $crunchifyLink = preg_replace('/rel=\S(?!nofollow)\S*/i', 'rel="sponsored"', $crunchifyLink);
	}
	
	return $crunchifyLink;

}

rel=”nofollow” code:

Just replace sponsored with nofollow in above code. Here is an updated code.

function crunchify_tips_on_add_rel_sponsored($content) {	
	return preg_replace_callback('/<a[^>]+/', 'crunchify_add_sponsored_all_external_links', $content);	
}
 
function crunchify_add_sponsored_all_external_links($crunchifyMatches) {
	
	$crunchifyLink = $crunchifyMatches[0];
	$crunchifySiteLink = get_bloginfo('url');
 
	if (strpos($link, 'rel') === false) {
	    $crunchifyLink = preg_replace("%(href=\S(?!$crunchifySiteLink))%i", 'rel="nofollow" $1', $crunchifyLink);
	} elseif (preg_match("%href=\S(?!$crunchifySiteLink)%i", $crunchifyLink)) {
	    $crunchifyLink = preg_replace('/rel=\S(?!nofollow)\S*/i', 'rel="nofollow"', $crunchifyLink);
	}
	
	return $crunchifyLink;
 
}

I hope this WordPress tutorial helps you add rel=”sponsored” attribute to outgoing links.

The post How to add rel=”sponsored” or rel=”nofollow” to all External links in WordPress? appeared first on Crunchify.