Allan Collins

<p>Is your website up to W3C HTML coding standards?  This plugin will allow you to test each page or post on your site against the W3C Validator.</p>
<p>Want to contribute? Fork it: https://github.com/allan23/validated</p>


Validated

This plugin will allow you to check your pages/posts HTML against the W3C Validator.

Sam Perrow

<p>This plugin allows users to automatically and easily embed resource hints to improve page load time.</p>
<p>DNS prefetch, prerender, preconnect, prefetch, and preload are all supported.</p>
<p>After installation, preconnect hints will automatically be created the next time your website is visited.</p>
<p>You have the choice to include these resource hints in the HTTP header or the website’s .</p>
<h3>Installation Video</h3>
<span class="embed-youtube" style="text-align:center; display: block;"><iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/Aha9E3AXvJQ?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe></span>


Pre* Party Resource Hints

Extremely effective, and by stealth, with automatic hints. My site speed score improved sharply. 

Great plugin

Take advantage of browser resource hints and plug-and-play features to improve page load time.

Validated vs Pre* Party Resource Hints