[lurtbancaster]

There are Firefox extensions that do this automatically, giving you that convenient RSS icon beside the URL, that you may then use to either read the feed directly in Firefox or copy-paste into your feed reader of choice.

Livemarks - https://addons.mozilla.org/en-US/firefox/addon/livemarks/

Want my RSS - https://addons.mozilla.org/en-US/firefox/addon/want-my-rss/

Easy to RSS - https://addons.mozilla.org/en-US/firefox/addon/easy-to-rss/

There may be Chromium alternatives too but I don't use Chromium.