sightfactory

The Restrict RSS Feeds plugin gives you several useful options for managing your feed such as:
<ol>
<li>Switching off all RSS feeds in your WordPress installation</li>
<li>Restricting access to authorized users by requiring a password for access</li>
<li>Removing descriptions and excerpts from the feed</li>
<li>Removing author names from the feed</li>
</ol>
RSS is a type of web feed that allows your readers to automatically get new content in email newsletters and RSS feed readers.
RSS feeds can be useful for your website when running a blog but are unnecessary if using WordPress as a basic website builder or ecommerce site. Some blog posts may also be gated content and be intended to be visible by authorized users only.

VisualWP Restrict RSS Feeds

A quick and easy solution to automatically disable all RSS feeds or restrict rss access with a custom password.

Samir Shah

This plugin disables all RSS/Atom/RDF feeds on your site. It is useful if you use WordPress purely as a content management system (and not for blogging). All requests for feeds will be redirected to the corresponding HTML content.
There are a couple of options to tweak the plugin’s behaviour – go to <code>Settings -> Reading</code> to see them.
If you come across any bugs or have suggestions, please use the plugin support forum. I can’t fix it if I don’t know it’s broken! Please check the <a href="https://wordpress.org/extend/plugins/disable-feeds/faq/" rel="ugc">FAQ</a> for common issues.
Want to contribute? Here’s the <a href="https://github.com/solarissmoke/disable-feeds" rel="nofollow ugc">GitHub development repository</a>.

Disable Feeds

Perfect

Disables all RSS/Atom/RDF feeds on your WordPress site.

VisualWP Restrict RSS Feeds vs Disable Feeds