Add word in the end of the path images

Hello

Thank you for this plugin

The plugin Add word in the end of the path images, i have the plugin installed in three websites in arabic language and the same issue

the path is like this http://www.woloj.com/wp-content/uploads/2016/02/primaire.jpg?9ba88a

I analyze the websites in gtmetrix.com and it tell me that’s not good for SEO “Resources with a “?” in the URL are not cached by some proxy caching servers. Remove the query string”

Any help is welcome

https://wordpress.org/plugins/wp-smushit/