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Documentation Index

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Hotlink protection stops external websites from directly embedding your images, videos, or other assets. Requests from domains not on your allowed list receive a 403 Forbidden response.

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Setup

1

Open your Pull Zone

Go to your Pull Zone in the dashboard and click Security in the side menu.
2

Add allowed referrers

Enter a domain (e.g., www.example.com) and click Add Allowed Referrer. Repeat for each domain that should have access.
Allowed referrers
Use wildcards for subdomains: *.example.com allows all subdomains, but doesn’t include the root domain. Add example.com separately if needed.

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Block direct URL access

Once you have allowed referrers configured, an additional option appears: Block Direct URL File Access. When enabled, requests with an empty referrer header (e.g., someone typing the URL directly into their browser) are also blocked.
Be careful with this option. Empty referrers can come from legitimate sources like email clients, some mobile apps, or privacy-focused browsers.

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Common allowed referrers

If you’re using hotlink protection but want social media previews to work (for og:image tags), add referrers for the platforms you use:
  • *.facebook.com
  • *.twitter.com
  • *.linkedin.com
  • *.pinterest.com