Optimizing the rendering of a document stored on a collaboration server is disclosed. A request for the document is received from the client computer device. The document, which is defined by one or more sets of content data objects at least partially defining the visual appearance of the document, is transmitted to the client computer device in response to the request. The document also includes one or more supplemental document resource objects. One or more first sets of raster image data, each representative of a specific segment of the document, are transmitted to the client computer device. This is in response to the request, and based upon an evaluation of an identification of the client computer device included therein.