John Dalesandro

The Head Trimmer plugin for WordPress is a customizable plugin to remove automatically generated information from the HEAD element across a site. These extras add bloat to a website and expose WordPress version information as well as other potential security signatures in the generated source code.
Removal options include:
<ul>
<li>WordPress Version</li>
<li>WordPress Version from URLs for Scripts and Styles</li>
<li>Shortlink</li>
<li>Shortlink from HTTP response headers</li>
<li>Canonical</li>
<li>Relational Links for Posts Adjacent to Current Post</li>
<li>RSS Feeds</li>
<li>Really Simple Discovery Link for xmlrpc (rsd_link)</li>
<li>Windows Live Writer Manifest File Link (wlwmanifest_link)</li>
<li>oEmbed Discovery Links</li>
<li>REST API Link</li>
<li>REST API Link Header</li>
<li>Emoji Support</li>
<li>Global Styles and SVG Filters (duotone filters)</li>
<li>Gutenberg Block CSS Styles (or set ‘should_load_separate_core_block_assets’)</li>
<li>Classic Theme Styles (classic-theme-styles)</li>
<li>DNS Prefetch for //s.w.org</li>
<li>DNS Prefetch for Google Fonts //fonts.googleapis.com</li>
<li>jQuery</li>
</ul>

Head Trimmer

Customizable plugin to selectively remove WordPress version information, feeds, shortlinks, xmlrpc, emoji support and other miscellaneous extras from  …

stanton119

WordPress HTML allows you to add custom HTML to both the post/page BODY and the HEAD tags from the page editor.
When copying HTML into the WordPress editor it adds spurious tags which break various elements and corrupt the HTML. By saving the HTML in the custom fields dialogue the exact HTML will be output to your post/page.
Also if you have a single page which requires an extra javascript library or style sheet you normally have to add it through your themes php files. Updating the theme files can be a pain; we normally have to set up an exception for that individual page and load it there. As this information is not available when we are editing the actual pages in the WordPress editor it is quite obstructive.
With WordPress HTML, we can add the library or stylesheet directly to the post/page head without the need to change the theme files. And importantly, all from within the WordPress editor for that page.
Example libraries: 
jQuery, ChartJS, D3js, Highcharts, Prototype
More details: <a href="http://www.richard-stanton.com/wordpress/wordpress-html/" rel="nofollow ugc">WordPress HTML</a>
Code: <a href="https://github.com/stanton119/WordPress-HTML-Plugin" rel="nofollow ugc">GitHub</a>

WordPress HTML

Add raw HTML to any post/page, without the Wordpress editor breaking it.

Head Trimmer vs WordPress HTML