Title: W3C Validation Errors
Last modified: July 1, 2023
---
# W3C Validation Errors
* Resolved [lamayas](https://wordpress.org/support/users/lamayas/)
* (@lamayas)
* [2 years, 11 months ago](https://wordpress.org/support/topic/w3c-validation-errors-16/)
* Hello,
* I recently tested a couple of my sites with the W3C Markup Validation Service
and got a lot of notices about Trailing slash on void elements:
* [https://tinyurl.com/29myudyu](https://tinyurl.com/29myudyu)
* At first I thought it might be a theme issue but I tested different sites with
different themes and got the same notice. All of the meta properties found in
the head of the site appear flagged with this notice, and since the HTML code
can’t be edited directly, I’m not sure how to fix them.
* I have not found much info about this online, only got results about trailing
slashes creating duplicated URLs but that’s not what’s happening here.
* I’d appreaciate any help about this or a push in the right direction.
* Thanks.
Viewing 3 replies - 1 through 3 (of 3 total)
* Plugin Support [Rank Math Support](https://wordpress.org/support/users/rankmathteam/)
* (@rankmathteam)
* [2 years, 11 months ago](https://wordpress.org/support/topic/w3c-validation-errors-16/#post-16868963)
* Hello [@lamayas](https://wordpress.org/support/users/lamayas/),
* Thank you for contacting Rank Math and bringing your concern to our attention.
* We are well aware of the meta tags structure for the web as described here.
[https://www.w3schools.com/tags/tag_meta.asp](https://www.w3schools.com/tags/tag_meta.asp)
* However, this is more than the meta tags since we and everyone else are following
the guidelines by OpenGraph and Facebook OpenGraph guideline:
[https://ogp.me/#metadata](https://ogp.me/#metadata)
[https://developers.facebook.com/docs/sharing/webmasters/#markup-example](https://developers.facebook.com/docs/sharing/webmasters/#markup-example)
* Hence, you can continue using the current meta tags you have. But if you still
wish to change them by removing the trailing slash, let us know here and we’ll
try to assist you with a filter/hook.
* Looking forward to helping you.
* Thread Starter [lamayas](https://wordpress.org/support/users/lamayas/)
* (@lamayas)
* [2 years, 11 months ago](https://wordpress.org/support/topic/w3c-validation-errors-16/#post-16878863)
* Please do! I’d like to try that.
* Thanks!
* Plugin Support [Rank Math Support](https://wordpress.org/support/users/rankmathteam/)
* (@rankmathteam)
* [2 years, 11 months ago](https://wordpress.org/support/topic/w3c-validation-errors-16/#post-16882119)
* Hello [@lamayas](https://wordpress.org/support/users/lamayas/),
* All the metatags added by the Rank Math plugin are correctly written. The notices
you get in the W3C validator are only info, and it also states that it has no
effect and interacts badly with unquoted attribute values. We never use unquoted
attribute values in the metatags, so this shouldn’t be a problem. You can ignore
those info messages.
* However, as per your request, we tried to build a filter/hook to remove the trailing
slash, but we noticed that this might create complexity upon application.
* Hence, the easiest way would be to edit the plugin’s core file, even though that’s
not the recommended way.
* Please head over to `/wp-content/plugins/seo-by-rank-math/includes/frontend/class-
head.php:`
* Edit **line 200** and replace it with the following one:
`echo '', "\n";`
* Edit **line 217** and replace it with the following one:
`echo '' . "\n";`
* After that, head over to `/wp-content/plugins/seo-by-rank-math/includes/opengraph/
class-opengraph.php:`
* Edit line 182 and replace it with the following one:
`printf( '' . "\n", $tag, esc_attr( $property ), $escaped_value );`
* Please stay advised that all these changes will revert once you update the plugin
to the latest version.
* If you don’t want to use the OpenGraph tags generated by Rank Math, you simply
remove and add them from any other sources:
[https://rankmath.com/kb/filters-hooks-api-developer/#remove-opengraph-tags](https://rankmath.com/kb/filters-hooks-api-developer/#remove-opengraph-tags)
* Hope that helps, and please do not hesitate to let us know if you need our assistance
with anything else.
* Thank you.
Viewing 3 replies - 1 through 3 (of 3 total)
The topic ‘W3C Validation Errors’ is closed to new replies.
* 
* [Rank Math SEO – AI SEO Tools to Dominate SEO Rankings](https://wordpress.org/plugins/seo-by-rank-math/)
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* 3 replies
* 2 participants
* Last reply from: [Rank Math Support](https://wordpress.org/support/users/rankmathteam/)
* Last activity: [2 years, 11 months ago](https://wordpress.org/support/topic/w3c-validation-errors-16/#post-16882119)
* Status: resolved