Firefox – Useful Extensions

uBlock Origin – HTML / Adblock third party reference blocker

AutoHiDPI – Auto Hi DPI – scaling for Retina displays
!!!!*** Has some stability issues (Firefox 41, although reports go back as far as Firefox 38 with different equipment and distros) … settings do not hold through system restarts, and occasionally turn off when restarting Firefox.  See Firefox about:config seach pixel – adjust layout.css.devPixelsPerPx from 1 to 1.5

FT DeepDark Theme – matching to Gnome3 dark theme