All of the feeds you used in your examples work fine, but on line 73 of index.js, you set description to be thisEntry.title instead of thisEntry.description. Simply changing that one line fixes the merging of various feeds, try for example merging the feeds ['https://myanimelist.net/rss.php?type=rw&u=PanDoes','https://www.theguardian.com/uk/technology/rss'] The ones from the first feed will have the title set as the description in the newly create feed.