Anuar

<p>Not all themes work the same way, and sometimes switching themes can lead to a lot of headaches. If you’ve previously used a theme that supports featured images and displays them on single post views, you probably want to ensure that these images are still shown if you switch to a theme that doesn’t show featured images here, without editing all of your old content.</p>
<p>This plugin automatically displays featured images at the top of the content area on single post views. It doesn’t check whether your theme displays them, so you’ll get double featured images if it does. It works via a filter, so if you ever switch themes again to one that does support featured images on single views, you can deactivate this plugin and things will go right back to normal. No information is saved in the database and no additional special image sizes are generated in this plugin.</p>
<h4>Possible Core Material</h4>
<p>This plugin may be material for WordPress core if it were to display featured images that exist when the current theme doesn’t support featured images. While this would reduce the potential for content loss, it would also have a significant affect on existing content.</p>


Featured Image in Content

Not all themes work the same way, and sometimes switching themes can lead to a lot of headaches. If you've previously used a theme that supports  …

Corey Salzano

<p>This plugin does one thing, and that thing is to add your posts’ featured image to the RSS feed. It specifies the ‘large’ image size.</p>
<h3>Open Graph Meta Tags are also Necessary</h3>
<p>Many modern feed readers do not show the images added by this plugin. Feedly, for example, will not show images added by this plugin. Feed readers crawl article pages to find the image attached to posts in the open graph meta tag. Many SEO plugins add open graph tags for featured images. I like the (https://wordpress.org/plugins/opengraph/)[Open Graph] plugin, too.</p>


Add Featured Image to RSS Feed

Adds the featured image attached to posts to the beginning of the post content and excerpt in RSS feeds.

Featured Image in Content vs Add Featured Image to RSS Feed