Pretty neat: the code hosting software pagure has a feature for pull requests from any publicly accessible git repository.
I've not only setup Inoreader to hide channels without unread content, I also removed the counts of unread posts (simply using my adblocker) to reduce the mental pressure. Maybe another option to consider?
<A HREF="http://www.example.com/myfile.pdf#page=4">
From a quick test also works in the build-in PDF viewers of Firefox and Chrome.