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RSS (RDF Site Summary or Really Simple Syndication)[2] is a web feed[3] that allows users and applications to access updates to websites in a standardized, computer-readable format. Subscribing to RSS feeds can allow a user to keep track of many different websites in a single news aggregator, which constantly monitor sites for new content, removing the need for the user to manually check them. News aggregators (or "RSS readers") can be built into a browser, installed on a desktop computer, or installed on a mobile device.

Quick facts: Filename extension, Internet media type,...
RSS
Filename extension
.rss, .xml
Internet media typeapplication/rss+xml (registration not finished)[1]
Developed byRSS Advisory Board
Initial releaseRSS 0.90 (Netscape), March 15, 1999; 23 years ago (1999-03-15)
Latest release
RSS 2.0 (version 2.0.11)
March 30, 2009; 13 years ago (2009-03-30)
Type of formatWeb syndication
Container forUpdates of a website and its related metadata (web feed)
Extended fromXML
Open format?Yes
Websitewww.rssboard.org/rss-specification
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Websites usually use RSS feeds to publish frequently updated information, such as blog entries, news headlines, episodes of audio and video series, or for distributing podcasts. An RSS document (called "feed", "web feed",[4] or "channel") includes full or summarized text, and metadata, like publishing date and author's name. RSS formats are specified using a generic XML file.

Although RSS formats have evolved from as early as March 1999,[5] it was between 2005 and 2006 when RSS gained widespread use, and the ("") icon was decided upon by several major web browsers.[6] RSS feed data is presented to users using software called a news aggregator and the passing of content is called web syndication. Users subscribe to feeds either by entering a feed's URI into the reader or by clicking on the browser's feed icon. The RSS reader checks the user's feeds regularly for new information and can automatically download it, if that function is enabled.

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