How to detect if a web URL contains a feed or not?

Posted by Veera on Stack Overflow See other posts from Stack Overflow or by Veera
Published on 2010-06-11T05:04:22Z Indexed on 2010/06/11 5:12 UTC
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browser

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rss

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feeds

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atom

I have seen in some browsers (Firefox for example), the RSS feed icon gets activated only when a page contains a RSS/Atom feed. How the browser detects whether the page contains a feed or not?

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