Computer storage media, computerized methods, and systems for semantically navigating between content using zoom operations, as well as other user-initiated operations, are provided. The zoom operations include an open-pinch gesture (zoom in) and a closed-pinch gesture (zoom out) physically applied to a touch-screen display of a client device, where the touch-screen display presents a document with original content. When one or more of the zoom operations have been detected as being performed upon a targeted portion of the original content, new content that is relevant to the targeted content is retrieved, as opposed to simply expanding or contracting the original content within a display area of the touch-screen display. The document is transitioned to a view with representations of the new content organized according to a format, where the format is dictated by a type of the one or more zoom operations being performed.