Compressing WordPress images

This is a great article on WordPress image compression.  This is a frequently underutilized method of improving SEO.  Sites routinely serve up images that are way too big.  And, the pages suffer conversion and traffic losses as a result of it.

Source: How To: Optimizing Your Web Images – MaxCDN Blog

And, this is a great WordPress plugin for auto compressing images.

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