I'm on Linux (NixOS) and have zero trouble viewing PDF's. And coming from a former Mac user (for whom the PDF format was practically native to the OS), that say

I'm on Linux (NixOS) and have zero trouble viewing PDF's. And coming from a former Mac user (for whom the PDF format was practically native to the OS), that says a LOT. "Evince" is Gnome's document/PDF viewer. It's a fine format that is broadly usable. I hit Spacebar, the PDF "quicklooks" (just like on macOS!) thanks to Gnome Sushi, it's great. Here, if you're a Linux guy, here's a bash function to view sexed-up man pages as PDF's (requires evince): pman() { tmpfile=$(mktemp --suffix=.pdf /tmp/$1.XXXXXX) man -Tpdf "$@" >> $tmpfile 2>/dev/null evince $tmpfile }