Some remote repositories include a resource that allows you to perform remote browsing operations directly from the Artifactory UI. Accordingly, JCenter and Maven Central support such remote browsing, while Docker Hub does not. In the example below, Artifactory is displaying the contents of a JCenter repository:
Typically, the remote site will need to be in a particular format and be able to support HEAD requests, which Artifactory performs to verify whether a given remote resource is available.