Mark Jansen

<p>Get the first image from the content of a post and set that image as a featured image.</p>
<h4>Features</h4>
<ul>
<li>Select the (custom) post type for which you want to set the featured images</li>
<li>Ability to overwrite existing featured images.</li>
</ul>


WP Set Featured Image From Content

Get image from content to set as featured image

ankittiwaari

<p>This plugin aims at providing users the capability to upload multiple thumbnails/featured images to a post. It uses wp.media js object to open a image uploader frame and choose/upload images. Once the images are selected, it will save the id of uploaded media object in a custom field.</p>
<h3>Getting uploaded images</h3>
<p>You can use the function aoc_get_images($post_id) to retrieve an array of urls of all the images that have been uploaded to a post. This function accepts the id of post (for which the images are to be fetched) as a parameter.</p>


AOC Multiple Post Images

AOC Multiple Post Images allows a user to upload multiple featured images to a post.

WP Set Featured Image From Content vs AOC Multiple Post Images