Is CDN content recognized as duplicated content?

The creoline CDN is compatible with HTTP technology for determining the canonical URL. If this setting is activated, the HTTP Link header is set in every CDN response to prevent duplicated content. Google treats the technology identically to the HTML tag version of the canonical URL.

Example request:

GET https://assets.cstatic.io/img/creoline-logo.svg

You can make the setting for the HTTP link header directly in the customer center in the settings of your CDN resource.

You can find more information about the canonical header here:

https://help.creoline.com/en/doc/cdn-einstellungen-festlegen-hjX2iZ7LFY#canonical-header

You can also influence the behavior of the CDN root document by restricting access to the root document.

You can find more information on root document behavior here:

https://help.creoline.com/en/doc/cdn-einstellungen-festlegen-hjX2iZ7LFY#root-dokument-verhalten

You can also find more information about the canonical URL in the official developer documentation from Google:

https://developers.google.com/search/docs/crawling-indexing/consolidate-duplicate-urls?hl=de