.ATOM File Extension

Atom Syndication Format File

Developer Internet Engineering Task Froce
2.6  |  11 Votes

What is an ATOM file?

An ATOM file contains a website feed saved in the Atom Syndication Format. This feed consists of XML-formatted data, which lists the website's recent articles (or other content). You are most likely to encounter an ATOM file in your web browser, when viewing a website's Atom feed.

More Information

Screenshot of a .atom file in Microsoft Visual Studio Code
ATOM file open in Microsoft Visual Studio Code

Web feeds are files that contain a list of a website's recent updates, typically saved in an XML format. When a user publishes an update to a website that uses a web feed, they (or their website's content management software) also update its feed to include a summary of the new content. Users subscribed to the website's feed are then notified of the new content.

Atom is a feed format that was created to compete with the more popular .RSS format. Just like RSS feeds, Atom feeds are formatted using XML.

In most cases, users who subscribe to an Atom feed will never need to view an ATOM file. Instead, they can simply enter the URL of a website's ATOM file into their Atom feed reader, to subscribe to the feed the file describes.

However, in some cases, users may download the current version of an Atom feed as an ATOM file. For example, a web developer may want to download a website's Atom feed as an ATOM file to inspect the feed's structure or troubleshoot feed issues.

How to open an ATOM file

If you've downloaded an ATOM file, you can open it in any text editor or web browser to view the data it contains.

To subscribe to a website's Atom feed, you must typically enter the website's Atom feed address into your feed reader.

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Programs that open ATOM files

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Verified by FileInfo.com

The FileInfo.com team has independently researched the Atom Syndication Format file format and apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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