There are addons for this: https://addons.mozilla.org/en-US/firefox/addon/markdown-viewer-chrome/ https://addons.mozilla.org/en-US/firefox/addon/markdown-view..

There are addons for this: https://addons.mozilla.org/en-US/firefox/addon/markdown-viewer-chrome/ https://addons.mozilla.org/en-US/firefox/addon/markdown-view... as well as rss: https://addons.mozilla.org/en-US/firefox/addon/rsspreview/ https://addons.mozilla.org/en-US/firefox/addon/rsspreview/