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How to manage your CDN through the CDN tool in Site Tools

How to manage your CDN through the CDN tool in Site Tools

How to access the CDN tool and enable CDN

To enable, disable and manage the settings of the CDN service, go to the Speed section in your Site Tools. First, pick the desired CDN plan.

IMPORTANT: If you have activated the CDN and then change the domain’s nameservers, the service will stop working and will be automatically disabled.

Then, to activate the service click the Activate button for the selected plan:

To stop using the CDN click the Deactivate button:

CDN Settings

Basic Features

These features are available on all CDN plans.

  • Cache Purge: Immediately initiate a purge of all cached resources for your website. Note that deleting all caches around the world could take up to 60 seconds. Important: Clearing your cache too often may slow down your site;
  • Development Mode: Development Mode temporarily suspends CDN’s caching features for all site visitors. Development mode is useful if you are making changes to cacheable content (like images, css, or JavaScript) and would like to see those changes right away. Note: Once entered, development mode will last for 30 minutes and then it will automatically toggle off;

Premium Features

You can enable these features only on the Premium CDN plan. You can order the upgrade directly from the service page in Site Tools > Upgrade to Premium.

  • Dynamic Caching: The Dynamic Cache is a full-page caching mechanism for non-static resources installed on the CDN edge servers. It prevents unnecessary database queries, processing of each page visit, and more;
  • Cache duration setting (TTL): the value determines how long the dynamic resources for your website are cached, which by default is 12 hours. Important: If your website’s application sends Cache-Control headers, they will override the CDN TTL value;
  • Under Attack Mode – Activate if you believe your website is under a DDoS attack. Before accessing your site all visitors will see a simple page while we are verifying the traffic. If the visit cannot be verified automatically, the visitor will need to complete a challenge to prove they are real. This way we filter the real visitors from the malicious traffic;
  • Keep site online: keeps your site online when your hosting server is not accessible, or the site returns an error message, and our CDN has cached copies of the site.

How to use the CDN with an SSL?

The CDN can be used with an SSL without the need of any additional setup. If you already have an SSL installed and your website is configured to open with HTTPS your website will still work normally with this setup after enabling the CDN.

How to enable CDN on a subdomain or a parked domain?

You can activate the service for all types of domains from the CDN section in your Site Tools. choose the desired domain from the Select Domain dropdown > CDN toggle button.

The CDN can be enabled for subdomains and parked domains only if you have the Premium CDN plan. You can order the upgrade from your Client Area > Marketplace > Hosting Services > CDN > Get.

Why can’t I use the CDN without using SiteGround’s nameservers?

If you enable the CDN service but your domain name is not pointed to our nameservers you will see a warning:

When using the SiteGround nameservers – ns1.siteground.net ( and ns2.siteground.net ( your domain name is using our centralized DNS. The centralized DNS is an essential part of the CDN as it checks the location of the website’s visitors and routes the incoming traffic to the appropriate CDN edge server where the visitor’s requests are handled. Without this functionality, there is no way to tell which edge server should an incoming request be forwarded to and thus the CDN cannot function.

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