I have a visual difference snapshot test suit running on my local machine (OSX), while my remote build system (Jenkins) uses an Ubuntu 16.04 slave. The fonts render differently on Ubuntu (hence my tests all fail). I was doing a bit of research to see if I could configure Ubuntu to exactly match OSX's rendering on Chrome, but it looks like the rendering approach is a factor of platform opinion, combined with the font-rendering system.
Thus, my impression is there is no deterministic way to ensure a webpage on Ubuntu exactly visually matches what (some version of) OSX renders.
Is this correct?