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Last active December 19, 2023 04:42
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Remove Yoast HTML Comments “This site is optimized with the Yoast WordPress SEO plugin”
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functions.php
// For Yoast SEO Plugin Version: 14.1+ add to your Wordpress Theme's functions.php...
// Remove All Yoast HTML Comments
// https://gist.github.com/paulcollett/4c81c4f6eb85334ba076
// Credit @devendrabhandari (https://gist.github.com/paulcollett/4c81c4f6eb85334ba076#gistcomment-3303423)
add_filter( 'wpseo_debug_markers', '__return_false' );
// For Yoast SEO Plugin Version: < 14.1 add to your Wordpress Theme's functions.php...
// Remove All Yoast HTML Comments
// https://gist.github.com/paulcollett/4c81c4f6eb85334ba076
// Credit @maxyudin (https://gist.github.com/paulcollett/4c81c4f6eb85334ba076#gistcomment-2937964)
add_action('wp_head',function() { ob_start(function($o) {
return preg_replace('/\n?<.*?yoast seo plugin.*?>/mi','',$o);
}); },~PHP_INT_MAX);
@Shoora
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Shoora commented Aug 12, 2017

thanks!! in Yoast SEO plugin v5.2 well working

@mike-source
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Not working for me:

Wordpress 4.8.2
Yoast SEO 5.5.1

@shangdev
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It working,super!

@paulcollett
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Author

I've just updated the above gist. Tested with:

Wordpress 4.9
Yoast SEO 5.7.1

(/cc @mike-source)

@nucklearproject
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nucklearproject commented Nov 13, 2017 •
edited

Yoast 5.7.1
WP 4.8.3

If you activated "forced rewrite titles" don't work...
If "forced rewrite titles" is checked, the title tag it does not printt.... :/

UPDATED!
Ok, I solved it

Uncheck "forced rewrite titles"
In your header.php or your head template add this:
<title><?php wp_title(''); ?></title>

@carlitoescobar
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Yoast SEO plugin v5.8
WP 4.9

Not working for me.

@ghub2015
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ghub2015 commented Nov 27, 2017 •
edited

It works (WP 4.9 + plugin v5.8) if you get rid of the check on 'WPSEO_VERSION' but I am not sure of any performance or reliability implications.
Specifically:

//if (defined('WPSEO_VERSION')) {
  add_action('wp_head',function() { ob_start(function($o) {
  return preg_replace('/^\n?\<\!\-\-.*?[Y]oast.*?\-\-\>\n?$/mi','',$o);
  }); },~PHP_INT_MAX);
//}

Edit: I just looked through the code and the check for WPSEO_VERSION should really work, so I am a bit puzzled myself. Anyway, consider this a drive-by comment as I wasn't specifically here for this, but just stumbled upon it. But, this is truly a wake up call for me to scrutinize these WordPress plugins more thoroughly.

@paulcollett
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Performance wise, it would be exactly same. I'll update the code above

@PaulRayden
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Nice, thx u

@TomasHurtz
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This snippet works fine but my functions file complains that the code is not valid!
yoast-snippet

@paulcollett
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@TomasHurtz, should be valid PHP5+, maybe your code editor is reporting for earlier versions of PHP.

Glad to hear it's still working for the community!

@wpplayer
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Thanks. Works great with Yoast v8.2.

@jamaluddinrumi
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jamaluddinrumi commented Sep 30, 2018 •
edited

It works (WP 4.9 + plugin v5.8) if you get rid of the check on 'WPSEO_VERSION' but I am not sure of any performance or reliability implications.
Specifically:

//if (defined('WPSEO_VERSION')) {
  add_action('wp_head',function() { ob_start(function($o) {
  return preg_replace('/^\n?\<\!\-\-.*?[Y]oast.*?\-\-\>\n?$/mi','',$o);
  }); },~PHP_INT_MAX);
//}

Edit: I just looked through the code and the check for WPSEO_VERSION should really work, so I am a bit puzzled myself. Anyway, consider this a drive-by comment as I wasn't specifically here for this, but just stumbled upon it. But, this is truly a wake up call for me to scrutinize these WordPress plugins more thoroughly.

+1

i use yoast 8.3 and wp 4.9

@mertsabuncu
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I tried, and it happened. I cited my source in a paper, thank you.
https://mertsabuncu.com/wordpress-sayfa-kodlarindan-yoast-seo-yorumlarini-kaldirin/

@cormartur
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thanks for the information
I tried it

https://www.paktogel.com/data-keluaran-singapura-live-result-sgp-prize/

@cormartur
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thanks for the information
I tried it

http://datapengeluarantoto.com/nomor-pengeluaran-togel-hongkong-result-hk-live/

@solucionesuno
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since last update of yoast 11 there is a problem with this cause it is printing code on header

@maxyudin
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maxyudin commented Jun 7, 2019 •
edited

Since plugin version 11 the original code breaks the Knowledge Graph & Schema.org contents (opening <script type='application/ld+json' tag disappears).
So, change preg_replace() pattern as follows. May be somebody have more elegant solution.

preg_replace('/\n?<.*?yoast seo plugin.*?>/mi','',$o);

@DennysDionigi
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DennysDionigi commented Aug 21, 2019 •
edited

Hi all, I found this function which seems lighter than a "heavy" replace:

/**
 * Disable Yoast's Mark and its version.
 */
add_action( 'template_redirect', function () {
     if ( ! class_exists( 'WPSEO_Frontend' ) ) {
        return;
    }
    $instance = WPSEO_Frontend::get_instance();
     // make sure, future version of the plugin does not break our site.
    if ( ! method_exists( $instance, 'debug_love') ) {
        return ;
    }
    // ok, let us remove the love letter.
     remove_action( 'wpseo_head', array( $instance, 'debug_love' ), 2 );
}, 9999 );

Also please note that as said by @maxyudin , the previous code breaks the script tag, adding the printed code in the body.

@kangmis77
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Looks good.. thanks dude... I'll try... http://ideunik.com/

@jeremypetrequin
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jeremypetrequin commented Jan 2, 2020 •
edited

The method seems to be called "debug_mark" in the latest version of Yoast,
So the adapted code of @DennysDionigi working for me on the last version is

/**
 * Disable Yoast's Mark and its version.
 */
add_action( 'template_redirect', function () {
	if ( ! class_exists( '\WPSEO_Frontend' ) ) {
		return;
	}
	$instance = \WPSEO_Frontend::get_instance();
	// make sure, future version of the plugin does not break our site.
	if ( ! method_exists( $instance, 'debug_mark') ) {
		return ;
	}
	// ok, let us remove the love letter.
	remove_action( 'wpseo_head', [ $instance, 'debug_mark' ], 2 );
}, 9999 );

@Ridys
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Ridys commented Feb 27, 2020

Thanks

@devendrabhandari
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devendrabhandari commented May 14, 2020 •
edited

Now use the below code to remove Yoast HTML Comments from version 14.1
Yoast SEO Plugin Version: 14.1

add_filter( 'wpseo_debug_markers', '__return_false' );

@mohsinr
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mohsinr commented Jun 19, 2020

Now use the below code to remove Yoast HTML Comments from version 14.1
Yoast SEO Plugin Version: 14.1

add_filter( 'wpseo_debug_markers', '__return_false' );

Thank you! It works!

@f0rtisyy2019
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Now use the below code to remove Yoast HTML Comments from version 14.1
Yoast SEO Plugin Version: 14.1
add_filter( 'wpseo_debug_markers', '__return_false' );

Thank you! It works!

Also works for me. Thanks

@ulissse
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ulissse commented Sep 6, 2020

Hello,
It work but is it possible to get rid of all the spaces and tabulations?
Thank you.

@eduardsantamaria
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Now use the below code to remove Yoast HTML Comments from version 14.1
Yoast SEO Plugin Version: 14.1
add_filter( 'wpseo_debug_markers', '__return_false' );

Thank you! It works!

Also works for me. Thanks

Now use the below code to remove Yoast HTML Comments from version 14.1
Yoast SEO Plugin Version: 14.1

add_filter( 'wpseo_debug_markers', '__return_false' );

It Works! Thank you!

@justinrains
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Awesome! Thanks for the code. Much appreciated!

@jenkinstm
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Still works! Thank you.

@ikiyamay
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Still works! Thank you.

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