Morgan Kay

If you use a service such as Feedburner or MailChimp to turn your RSS feed into an email subscription, and the images in your posts are more than 600px wide, the formatting of your HTML emails might be messed up. This plugin lets you resize the images in your RSS feeds.
Version 2.0 has been completely re-written from scratch! It is now more reliable, and works with images from external URLs.

RSS Image Resize

Resize images in RSS feeds so they will fit in HTML emails.

GNPublisher

GN Publisher makes RSS feeds that comply with the <a href="https://support.google.com/news/publisher-center/answer/9545420" rel="nofollow ugc">Google News RSS Feed Technical Requirements</a> for including your site in the <a href="https://publishercenter.google.com/" rel="nofollow ugc">Google News Publisher Center</a>.
The plugin addresses common RSS compatiblity issues publishers experience when using the Google News Publisher Center, including:
<ul>
<li>Incomplete articles</li>
<li>Duplicate images</li>
<li>Missing images or media</li>
<li>Missing content (usually social media/Instagram embeds)</li>
<li>Title errors (missing or repeated titles)</li>
<li>Cached RSS feeds causing slow updating</li>
<li>Delayed crawling by Google</li>
</ul>
After installing, click on the ‘Dashboard’ under GN Publisher on your plugins page for additional information about applying and troubleshooting issues related to the Google News Publisher Center.
New in 1.5.24 
Compatibility with Apple news publish
New in 1.5.11 
Google Reader Revenue Manager support.Reader Revenue Manager provides publisher solutions to deepen audience engagement and convert subscribers or contributors.
New in 1.0.9
GN Publisher now displays the time of the most recent ping and feed fetch from Google. This helps when troubleshooting the dreaded ’empty sections’ issue in the Google News Publisher Center.
New in 1.0.6
GN Publisher now pings Google when feeds are updated. This can help with faster updates in your Google News Publication.
<h3>Support</h3>
We try our best to provide support on <a href="https://wordpress.org/support/plugin/gn-publisher/" rel="ugc">WordPress GN Publisher plugin support forum</a> forums. However, We have a special <a href="https://gnpublisher.com/contact-us/" rel="nofollow ugc">team support</a> where you can ask us questions and get help. Delivering a good user experience means a lot to us and so we try our best to reply each and every question that gets asked.
<h3>Bug Reports</h3>
Bug reports for GN Publisher: Google News Compatible RSS Feeds are <a href="https://github.com/ahmedkaludi/gn-publisher/issues/" rel="nofollow ugc">welcomed on GitHub</a>. Please note GitHub is not a support forum, and issues that aren’t properly qualified as bugs will be closed.
<h3>PRO Version</h3>
Take you Google News Feed experience to next level by using our <a href="https://gnpublisher.com/pricing/#pricing" rel="nofollow ugc">GN Publisher PRO</a> plugin which contains the following features.
<ul>
<li>Content Scraping Protection </li>
<li>Exclude Categories From Main Feed </li>
<li>Google News Sitemap </li>
<li>Compatibility with Flipboard.com</li>
<li>Compatibility with PublishPress Authors</li>
<li>Compatibility with Translate Press</li>
</ul>

GN Publisher: Google News Compatible RSS Feeds

GN Publisher makes RSS feeds that comply with the Google News RSS Feed Technical Requirements for including your site in the Google News.

RSS Image Resize vs GN Publisher: Google News Compatible RSS Feeds