No Frills Plugins

Img To RSS is a simple, no-frills plugin that automatically adds images to your WordPress RSS feeds. With this plugin, each entry in your RSS feeds will have an image field populated with the featured image of your posts, making sure that your content is engaging and shares well on platforms that utilize RSS feeds.
More info: <a href="https://www.nofrillsplugins.com/imgtorss" rel="nofollow ugc">NoFrillsPlugins Img To RSS</a>
<h3>Additional Information</h3>
This section is used to provide additional information that does not fit into the sections listed above. If you’re using this readme for the WordPress.org repository, this section is not displayed and you can skip it.

Img To RSS

A simple plugin that ensures images are included within your WordPress RSS feeds.

P. Chandra

Adds copyright notice at end of articles in full text RSS feeds, with back links to the blog and original article.
A notice gets attached at the bottom of feed articles like this 
Original Article: Title of Article (linked to permalink) 
Copyright Year. Blog Title (linked). All Rights Reserved
Your Blog title is linked to your blog Url. Your article title is linked to the article permalink.
Blog copyright notices are important as your feed gets freely distributed across the web and is republished without permission by RSS scrappers and autoblogs. After using this plugin, now RSS scrappers will link back to your site, which will suggest to search engines that your blog and article was the original source.

Simple Feed Copyright

Adds copyright notice at end of articles in full text RSS feeds, with back links to the blog and original article.

Img To RSS vs Simple Feed Copyright