If you then use fractional scaling, Xwayland will render at the fractional of your resolution and will be scaled linearly to your display.

This has recently been fixed:

https://release.gnome.org/47/

For “basic edition (rotating pages, etc)”, I myself always use pdftk.

“If PDF is electronic paper, then pdftk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses.”

“All mail clients suck. This one just sucks less.”

http://mutt.org/