ShortPixel plugin queries
Our image optimization plugin needs to make several database queries in order to find which images need optimization. Basically, the plugin checks your WP metadata, pulls out image info and sends the data to our Image Optimization API.
If your website has tens of thousands or more images then many queries will be executed in order to ShortPixel to know how many images are to be optimized on your website.
Please note that those requests are only executed when you are logged in WP dashboard with certain roles. A visitor of your website will not trigger them (unless Process in front-end is checked in the plugin settings).