I use an android (and iOS I think) app called Xodo. The "reader mode" re-flows the PDF into a screen-width single column like an e-book. The latest update reall

I use an android (and iOS I think) app called Xodo. The "reader mode" re-flows the PDF into a screen-width single column like an e-book. The latest update really buried the option in the menus, but it's there somewhere and works pretty well.