Remove Yoast HTML Comments “This site is optimized with the Yoast WordPress SEO plugin”

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);

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.

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

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 );

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' );

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!

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

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

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!

Awesome! Thanks for the code. Much appreciated!

Still works! Thank you.

Still works! Thank you.