Nowdays, all sites' owners are trying to optomize speed for the end users. One way to do it is using a CDN for images. There are free and paid ready-made solutions on the market. But why to pay if you can jsut use your server and domain? You need to:1. set up the subdomain like cdn.my-site.com type2. then you need to add magic code to your wordpress/functions.php, which will store the image not to uploads folder but, for example, to subdomain cdn.my-site.com, the…