So far all the readers I experienced scroll pages vertically, while fitting horizontally A4 pages' width.
Are there softwares out there able to:
- "swipe left" pages
- fit vertically both A4 and A3 pages (which have the same height) to the portrait-oriented screen
- compatible with linux and android
- must have would be some comment-stick/highlight/draw-on features
- cherry on the top would be integrated sync to both centralized and self-hosted clouds ?
Sometimes pdf files include portrait-oriented A4 pages, with landscape-oriented A3 pages, and it's a pain in the ass having to resize at each switch...

