Great add-on. Does just what I need and nothing more. I can see feeds and quickly subscribe to them using my preferred reader (Feedly).
A few minor suggestions if you're interested in adding anything:
1: The old Apple Safari RSS reader had a slider to let you decide how much content to show for each item, ranging from the subject only up to the full content. WMRSS always shows the full content. Maybe a configuration to let me choose to see subjects only or the subject + the first 3 or 5 lines of content.
2: A way to select the font and size
But these are very minor concerns since I usually just look at the feed long enough to subscribe to it
This have everything I miss from the now removed newsfeed support in Firefox. Detection of feeds, preview and easy subscription to my favorite newsreader all works. It also supports the not (yet?) very used JSON feeds format, and as far as I can see from my first tests, it also detects all the varyingly feeds offered when surfing around on a "single-page-application" like for example Flickr... Thanks for the good work!
This one would be the best addon ever made for the feed rss, if he did not show the raw xml page with some subscription... i hope for a improvement. Thank you!
Edit: good job! Now works very well, thank you so much! P.S. would be extraordinary to have the dynamic icon for light/dark theme (or neutral for both, example a orange icon) and the option for to open the rss always in a new tab. Thank you again for the fix!