If you try searching for the best image CDN on the WordPress plugin directory, the results will probably leave you with even more questions than answers.
What you’ll find as the top suggestions are image optimization plugins instead of CDNs for images. This can be pretty confusing – especially when you consider the basic fact that, whereas all image CDNs are image optimization solutions, not all image optimization plugins would qualify as image CDNs for WordPress.
Typing in “best WordPress CDN” wouldn’t help either. The system will only change its results into generic CDN and cache plugin options, without explicitly pointing out the best CDN for images.

Now, to clear up all that mess, we’ve put together the ultimate image CDN comparison guide for WordPress users.