By default, Hugo will create an unlimited number of RSS entries. You can limit the number of articles included in the built-in RSS templates by assigning a numeric value to rssLimit: field in your project’s config file.
The following values will also be included in the RSS output if specified in your site’s configuration:
languageCode="en-us"copyright="This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License."[author]name="My Name Here"
The Embedded rss.xml
This is the default RSS template that ships with Hugo: