1) Finder is an excellent image viewer. You want gallery view, which is one of the prominent buttons visible by default in the OS version I'm using. Maximize th

1) Finder is an excellent image viewer. You want gallery view, which is one of the prominent buttons visible by default in the OS version I'm using. Maximize the window, and images will be nearly full-screen. No hidden UI elements needed. It's crazy to me that there is nothing like this (?) by default in Ubuntu. In the case that icon view really is what you want, you can adjust icon sizes with the slider in the bottom right corner - still no hidden UI elements. 2) Agreed, this is silly. This is likely fixed by one of the items in this very long list of power-user tweaks: https://github.com/mathiasbynens/dotfiles/blob/master/.macos https://github.com/mathiasbynens/dotfiles/blob/master/.macos