My favorite Linux commands for optimizing web images: 
I used to stay away from images when working online. Handling and optimizing images can be both imprecise and time-consuming.
Then I found some commands that changed my mind. To create web pages, I use Jekyll, so I’ve included that in the directions. However, these commands will also work with other static site generators.
read more: Opensource.com ayushsharma-in
Supporting Open Source.
Have you tried: Visiting Port Elizabeth?