Jake Bresnehan

This plugin provides you an easy quick way to test your content looks good at various sizes.
Features of the plugin include:
<ul>
<li>Mobile view</li>
<li>Tablet view</li>
</ul>
Getting setup with the plugin
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/bXe5_BvvtxA?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>
<a href="http://web-design-weekly.com/support/" rel="nofollow ugc">Plugin Support & Feature requests</a>.

Responsive Post Preview

Adds the ability to view your posts and pages at different viewport sizes with a click of a button

Aaron Butacov

Adds a [post_thumbnail] shortcode for use with wordpress post thumbnails. Size can also be set using [post_thumbnail size=”XXXX”]. (You can call the function directly in your theme with <code><?php post_thumbnail('size=thumbnail');?></code>.)
Just insert the shortcode into any post’s content and when it will be replaced with the featured image.
This works only with the featured images introduced in WordPress 2.9.
For more information head to the full information page for <a href="http://aahacreative.com/our-projects/wordpress-post-featured-image-shortcode/" rel="nofollow ugc">WordPress Post Thumbnail Shortcode</a>.

Insert Featured Image Shortcode

Adds a shortcode to insert the post's featured image into the post's content.

Responsive Post Preview vs Insert Featured Image Shortcode