Sharing extension points to allow an application to share content via a sharing extension

A sharing extension point receives a request from a host application for sharing content, the sharing extension point being one of the extension points of an extension framework of an operating system, each corresponding to a common interface to extend a predefined functionality of one application to another application. In response, a sharing extension capable of providing content sharing services is launched. Data representing a share sheet created by the sharing extension is injected into a content viewer within the host application as a share sheet clone, where the share sheet clone has a reduced resolution image of the content displayed therein. In response to receiving a commit command for sharing, the actual content is retrieved from the host application and the retrieved content is transmitted to the sharing extension to enable the sharing extension to post the share sheet on a sharing platform.