ripleman

I use blocked Yoast SEO in Updates Manager, when I unblock it, this issue gone. And i have Yoast SEO Premium version.

and get these notice + warning when saving changes to other plugins:

Notice: wbcr_factory_admin_notices is deprecated since version 4.0.5! Use wbcr_factory_notices_405_list instead. in .../wp-includes/functions.php on line 4104

Warning: Cannot modify header information - headers already sent by (output started at .../wp-includes/functions.php:4104) in /home/luminous/gerobotic.com/grtest1/wp-includes/pluggable.php on line 1219

Thanks for reply, tell if I need to provide more info.

You remove wp_resource_hints in your plugin with this hook:

if( $this->getOption('remove_dns_prefetch') ) {
	remove_action('wp_head', 'wp_resource_hints', 2);
}

WP adds by default with this function <link rel=’dns-prefetch’ href=’//s.w.org’ /> and <link rel='dns-prefetch' href='//fonts.googleapis.com' />

So all this links will be removed and all links added with wp_resource_hints will not work.

But there is one important thing related to “dns-prefetch”:
On HTTPS web site by default “dns-prefetch” will not work, so we need to add <meta http-equiv="x-dns-prefetch-control" content="on"> meta tag to to enable “x-dns-prefetch-control”, WP dont do this by default, and wp_resource_hints cant add this meta tag.

You can remove wp_resource_hints and make your own function to add links to header.

So I think it will be very useful to add custom links to header and user can define there own domains with custom links and priority (output order).
And even with ability to add or exclude links for different pages. Because ‘contacts’ page will have more links to google maps, for example.

And now we have more resources hints, which are very useful to speed up site loading. And I think it will be very convenient to add them with UI:
1) “dns-prefetch” with <meta http-equiv="x-dns-prefetch-control" content="on"> added by default.
2) “preconnect” – better “dns-prefetch”, but for modern browsers
3) “prefetch”
4) “preload”
5) “prerender”

But maybe it is simple to do with another plugins, which add links to head, and not related to this plugin. But one of cant add links to individual pages, another cant set links output priority in header, another dont clean DB on uninstall, another have ads or need pro version, or have errors and etc.

[ Please do not bump. ]

Yes, gravatars are loading for logged in users. But after disabling all comments there is no “Discussions” tab in WP Settings, so you need to disable gravatars first, then disable comments.

delete this, duplicated