About zooming pages
You can enlarge or reduce a page to any size allowed – within the range of the minimum and maximum zoom levels. When you zoom-in to a size larger than the window, you can use the Hand tool to move the page.
About the Zoom controls
Use the Zoom tools beside the magnification level box on the View bar to expand or reduce the current Document View. You may also select a preset zoom factor or enter a desired factor directly.
About the Zoom-in / Zoom-out tool
Select the Zoom-in tool in the View ribbon to enlarge, or the Zoom-out button to reduce the view.
While one of the Zoom tools is selected, you can press the Ctrl key to switch between the Zoom-in and Zoom-out tool.
About the Dynamic Zoom tool
Use this tool to enlarge or reduce page view according to the mouse movement. Drag up to zoom in, drag down to zoom out.
About the Loupe View tool
Use this tool to view a highly enlarged page view within the loupe area. You can change the scale of the loupe and move the loupe freely within the program window. See Set up a Loupe View window for detailed steps.
Using page thumbnails to zoom
Page thumbnails display in the Pages panel. A red box in the thumbnail shows which part of the page is being displayed. Drag corners or edges of this box to change the part of the page that is visible.