Broken Images on Documentation Pages
Images uploaded to Exchange with the Markdown editor are stored in Exchange.
If your community shows a broken image on an API documentation page, and the image displays correctly on the API documentation page in Exchange, follow these steps:
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If the image is stored in Exchange, make the Exchange API version asset public so the image can be rendered in your community.
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If the image is stored on a web location outside Exchange, such as S3 or Dropbox:
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Open Salesforce setup.
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Open your community’s content security policy (CSP) trusted sites list.
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Ensure that the list includes the image site domain.
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Because some file-sharing services resolve URLs through multiple redirects, ensure that the list includes the domain of the final URL.
 
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To learn if any content in any component or page of the community is blocked by the content security policy:
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Open the API Community Manager control panel.
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Click Community Builder.
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Click Preview.
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Open the page that contains the content.
 
To inspect the URLs the browser loads when rendering a community page, use the browser developer tools.



