Holy shit this is the best thing ever, I can finally read those shitty 2-column articles without going crosseyed, I've tried dozens of pdf apps for Android and none do this kind of thing. WELL DONE.
Just a suggestion, I would love a reader on Windows (or a plugin for Sumatra PDF) that does this automatically when I open pdf files so that I don't have to convert everything beforehand (amazingly, conversion to mobile layout makes things WAY more readable even on a laptop screen!)
Anyways, thanks again for this software and I hope whoever invented the 2-column journal format burns in hell for eternity