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Or you can follow steps with screenshot below:
1. LogIn your WordPress
2. Go to Plugins and click Add New
3. Insert keyword CDN in the box and Enter for CDN Plug-In
4. Install and Activate W3 Total Cache PlugIns
5. In the menu performance, select General settings and scroll down to CDN, check the box to Enable CDN
6. Choose CDN type: Generic Mirror and then save all setting
7. Now you can enter your CDN name menu performance under CDN
8. Enter CDN name in text box under configuration Replace site’s hostname with: <CDN name> Click Test Mirror to check the CDN is functioning properly
9. And then save all setting
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