What is RSS Feed
RSS (Rich Site Summary) is a format for delivering regularly changing web content. Many news-related sites, weblogs and other online publishers syndicate their content as an RSS Feed to whoever wants it.
More reference of RSS
How to collect web sites RSS Feed
Web browser – Google Chrome
In early 2013, Google were tried to remove RSS subscription and reading features on its web browser, Chrome browser.
Google’s RSS Chrome extension returns to Chrome Web Store but Reader-lesshttps://www.pcworld.com/article/2031220/google-s-rss-chrome-extension-returns-to-chrome-web-store-but-reader-less.html
How to make Chrome browser become a RSS Reader
You can add the following Chrome browser extension to organize your RSS Feeds.
Web browser – Firefox
Firefox removed RSS feature on Firefox web browser since version 64 in Dec 2018.
Feed reader replacements for Firefoxhttps://support.mozilla.org/en-US/kb/feed-reader-replacements-firefox
How to make Firefox web browser become a RSS Reader
You can add the following Add-on to organize your RSS Feeds within Firefox web browser.
Really Simple Rsshttps://addons.mozilla.org/en-US/firefox/addon/reallysimplerss/
Web browser – Safari
RSS Button for Safarihttps://apps.apple.com/us/app/rss-button-for-safari/id1437501942?mt=12