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Control which sites can embed or link to your CDN content based on the HTTP Referer header.
Referrer Access Policy

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Modes

  • Allow by default — every referrer can fetch content; list domains to block.
  • Deny by default — only domains in your allowlist can fetch content.
Add allowed or blocked domains under Specify Domain(s).

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When to use this

  • Stop other sites from hotlinking your images, videos, or downloads.
  • Pin your video player to a known set of partner sites.
The Referer header is sent by the client and can be spoofed or stripped. For high-value content, combine referrer rules with Token Authentication.