How to optimize images in Ubuntu (GNU/Linux) using command line tools

In this tutorial we will show you how to optimize images in Ubuntu (GNU/Linux) using command line tools. I’m writing down the steps I used to optimize around 15GB of images used on a Joomla based website. This not just speeds up the loading of the website, but also reduces bandwidth and disk usage.

The tools I used to optimize the images on the GNU/Linux system are jpegtran and jpegoptim and in this case the machine was running Ubuntu 14.04:

LET’S START First, you will need to log in to your VPS as ROOT via SSH. Once you are in the first thing you need to do is to downloads the package lists from the repositories and “update” them to get information on the newest versions of packages and their dependencies. It will do this for all repositories and PPAs. To do that just type:

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