PUBLIC MARKS from bader with tag atom

This is the W3C Feed Validation Service, a free service that checks the syntax of Atom or RSS feeds.

Atom defines a feed format for representing and a protocol for editing Web resources such as Weblogs, online journals, Wikis, and similar content. The feed format enables syndication; that is, provision of a channel of information by representing multiple resources in a single document. The editing protocol enables agents to interact with resources by nominating a way of using existing Web standards in a pattern.

People who generate syndication feeds have a choice of feed formats. As of mid-2005, the two most likely candidates will be [WWW]RSS 2.0 and [WWW]Atom 1.0. The purpose of this page is to summarize, as clearly and simply as possible, the differences between the RSS 2.0 and Atom 1.0 syndication languages.

Atom is the name of an XML-based Web content and metadata syndication format, and an application-level protocol for publishing and editing Web resources belonging to periodically updated websites.