apt-get install optipng apt-get install php-imagick apt-get install libjpeg-progs apt-get install graphicsmagick apt-get install gifsicle wget http://static.jonof.id.au/dl/kenutils/pngout-20150319-linux.tar.gz &&\ tar -xf pngout-20150319-linux.tar.gz &&\ rm pngout-20150319-linux.tar.gz &&\ cp pngout-20150319-linux/x86_64/pngout /bin/pngout &&\ rm -rf pngout-20150319-linux
Install EWWW Image Optimizer dependencies on Ubuntu
July 13, 2016
Ubuntu/Debian, Unix, WordPress