Have you tried imagus, hoverzoom or thumbnail zoom? It has changed the way I internet. Hover your mouse over almost any image, video, or gif and it automatically opens and shows the full size. I have been using imagus on firefox for ages and quite like it. It doesn’t work with some websites or apps, and probably wouldn’t work with an installed app, but should work for one of the rss web apps?

Please disregard if this is a silly suggestion, I have always been curious about rss feeds, but have never actually used one.