Abstract: Techniques for navigation control availability are described that provide dynamic navigation controls configured to remain available throughout viewing operations including scrolling and resizing. A page of content (e.g., a webpage or document) having one or more dynamic navigation controls can be rendered within a viewing pane of a client application. Dynamic navigation controls within the page can be detected by parsing code associated with the page that defines the controls. When a viewing operation is performed that changes the display of the rendered page, the detected navigation controls can be dynamically adjusted to remain visually available according to associated behaviors. Behaviors associated with dynamic navigation controls can include, for example, docking of the controls to a visible position in or adjacent to the viewing pane, relocating of the controls, and/or resizing of the controls within the rendered page to keep the controls visible.