I know we can look up 'type="application/rss+xml"' in the html content of a web site to find a RSS feed for it: How to find RSS feed of a particular website?
But some web sites doesn't contain 'type="application/rss+xml"', but it still has a RSS feed. For example, the RSS feed for http://blog.linkedin.com/ is http://feeds.feedburner.com/LinkedInBlog.
Is there any way I can look up a RSS feed for a web site? Is there an API or commercial/free website service? I know Google feed api, https://developers.google.com/feed/, but it has been deprecated.
Thanks.