Mixed content is when plain text (i.e. http) is served over an https connection. Your browser will report an error through the padlock found in the search bar. Mixed content will change your padlock from green to another message.

 

If the application uses a repository, images should ALWAYS be stored in the repository.

 

If the application uses file overrides, the best option is to serve the resource via the application, i.e. custom user fields. Custom user fields can be accessed by specifying a scope variable in your javascript file.

 

The second best option is to serve the resource via a Themes folder (https accessible) and use relative linking.

 

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