The CDN rewrite option allows you to easily use third-party CDN providers on your WordPress site. Rewrite means that it will automatically change all of your assets’ URLs on the fly to use the CDN URL. This way, your assets will load from all of the global CDN POPs, instead of just your server.
A few popular CDN providers we recommend include:
Enable CDN rewrite
Follow the steps below to enable CDN rewriting of your URLs.
Click into the Perfmatters plugin settings.
Click on the “CDN” tab. Toggle on “Enable CDN Rewrite.”
Note: Make sure to first configure your CDN URL.
Scroll down and click “Save Changes.”