CDN Connector will help you to add support any CDN services. Plugin is very plain.
You can add support MaxCDN, KeyCDN, CloudFront, CloudFlare, etc.
2. Plugin has very GOOD performance and support with any nopcommerce plugins.
We added support most popular CDN services from the box - MaxCDN, KeyCDN, CloudFront, CloudFlare (for function 'purge cache').
Not registered version is fully operational. It has only one limitation (30 days trial period). Try before buying.
Compatible with NopCommerce 3.90.