An RSS (Really Simple Syndication) feed is a standardized, computer-readable format that allows users and applications to access updates to websites. It is an online file that contains details about every piece of content a site has published, including the full-text of the content or a summary, publication date, author, link, etc. . Subscribing to RSS feeds can allow a user to keep track of many different websites in a single news aggregator, which constantly monitors sites for new content, removing the need for the user to manually check them.

RSS feeds are used by websites to publish frequently updated information, such as blog entries, news headlines, episodes of audio and video series, or for distributing podcasts. RSS feed data is presented to users using software called a news aggregator, which can be a standalone app or a built-in feature of a web browser. An RSS reader is an app that parses the XML code of an RSS feed and renders it to look more like what youd see on a website.

To use an RSS feed, a user needs to choose an RSS reader. Each reader has a slightly different way of adding a new feed, also called a "channel." The user can click on the link or small XML button near the feed they want, and then copy the URL (web address) from their web browsers address bar. They can then paste this URL into their RSS reader to subscribe to the feed.

In summary, an RSS feed is a standardized format that allows users and applications to access updates to websites. Subscribing to RSS feeds can allow a user to keep track of many different websites in a single news aggregator, which constantly monitors sites for new content. An RSS reader is an app that parses the XML code of an RSS feed and renders it to look more like what youd see on a website.