How to optimize a full feed
Sample full feed: The Verge <http://www.theverge.com/rss/full.xml>
Images
Be sure to use high resolution visuals to support your articles.
Video
Feedly supports embedded videos from YouTube and Vimeo.
Audio
Feedly supports embedded audio files.
Note:
Please always make sure your RSS feed is validated and has no errors: https://validator.w3.org/feed/