Wrong Canonical URL on Home Page

Hello,

Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for any inconvenience this issue may have caused you.

Could you please go to WordPress Dashboard > Settings > General, and make sure that the “WordPress Address” and “Site Address” have the same setup?

Meaning both URLs have the same exact protocols with the trailing slash. They should be matching and not have a mismatch.

If those are already set up, please go to your WordPress Dashboard > Settings > Permalinks and click save changes without making any changes.

Let us know how this goes.

Thank you.

Hello,

Thank you for getting in touch and we are sorry to hear about the issue you are facing.

You can also use the plugin below to add custom filters on your theme without having the need to use the funcions.php:
https://wordpress.org/plugins/code-snippets/

This way, you can always have the code without worrying about losing it when you switch themes.

Here’s the code to which you can forcibly add a trailing slash to your canonical URL:

add_filter( 'rank_math/frontend/canonical', function( $canonical ) {
	return trailingslashit($canonical);
});

Hope that helps and please do not hesitate to let us know if you need my assistance with anything else.

Hello,

Please try this filter to force removing all the trailing slashes:

add_filter( 'rank_math/sitemap/entry', function( $url, $type, $object ){
$url['loc'] = untrailingslashit( $url['loc'] );
return $url;
}, 10, 3 );

Make sure to clean your cache and resave the permalinks (just press the save button) so the sitemaps are regenerated.

This filters all your URLs before adding them to the sitemap to make sure they have the trailing slash removed.

Let us know how this goes.

Thank you.