[loudmax]

There's an unofficial Arch package for it: https://aur.archlinux.org/packages/pandoc-bin/

I wish I'd known about this sooner. I don't spend much time with text documents outside the web, but when I do, pandoc handles the disparate formats admirably. The only inconvenience is when I update my system, there's guaranteed to be a huge pile of Haskell libraries to download.