Abstract: An image-based document may include text that is presented in a multicolumn format that is not structured or associated with metadata of the document. A zoom manager may analyze the image-based document, identify a presence and location of a column of text, and then enable automatic zooming-in on the column of text to fill a display space without further interaction by a user. In various aspects, the zoom manager may order the columns to enable the user to continuously scroll from column to column while navigating the document in a column-viewing (zoomed-in) mode. The zoom manager may also selectively maintain or remove information or objects from the columns while in the column-viewing mode, such as images, headers, footers, page numbers, or other types of information or objects.

Abstract: A digital image to be presented on an electronic display of an electronic device is expanded so that the content of the digital image fits the electronic display and the margins are cropped (e.g., rendered invisible) on the electronic display. The initial determination may be for a first total length of a left margin and a right margin of the digital image. The second determination may be for a second total length of a top and a bottom margin of the digital image. An expansion factor based at least in part on the smaller of the first and second total lengths may be derived. The application of the expansion factor enables the creation of an expanded digital image having content that maximally fit the electronic display. In some aspects, the expanded digital image is stored in a data cache.

Abstract: Content portions to be presented on a display of an electronic device are identified by designating portions of a digital image as content regions and other portions of the digital image as non-content regions. The content portions are then identified from within the content region, in which each content portion has a predetermined width. Each content portion is then expanded to produce an expanded content portion. Each expanded content portion is presented on a display of an electronic device in a sequential manner.