Adjust page zoom level
You can use Zoom tools or the Zoom level controls on the View tab or Page viewing controls bar to view a page or an image with different magnification.
Use the Zoom tools
Choose View > Zoom and select Zoom tools to zoom in, zoom out, or just view a particular area at high magnification.
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Zoom in/out. Select Zoom in/out to change the document magnification by preset levels. You can click or drag a rectangle on the page.
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Dynamic Zoom. Click Dynamic Zoom and a magnifying glass will appear. Drag up/down a page with the magnifying glass to smoothly zoom in/out pages without sudden transitions. Or, roll up/down a mouse wheel to zoom in/out pages in preset levels.
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Loupe View. Click Loupe View and click again anywhere on the page to call out the magnifying window. You can drag the loupe rectangle around to change its loupe view. Changing the color for the loupe rectangle is also available in the Loupe View Tool window.
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Choose View > Zoom > Loupe View 
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Click an area where you want to view in closer detail. A rectangle appears in the document, corresponding to the area shown in the Loupe View Tool window. You can also drag the rectangle to change the view.
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(Optional) To change the zoom level of the Loupe tool, you can do any of the following:
A. A moveable rectangle B. A magnified portion displayed in the Loupe View Tool window with zoom level tools (C) at the bottom
Adjust Zoom level with the Zoom level controls
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Zoom in/out button: click the 
or 
button to change zoom level.
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Zoom value text box: enter any number between 6.25 and 6400 into the percentage field and press enter.
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Zoom value menu button: click the arrow right next to the zoom text box and select a preset percentage, ranging between 12.5% and 6400%.
Adjusting Zoom level on the Page Viewing controls bar: A. Zoom out button B. Zoom value text box C. Zoom value menu button D. Zoom in button
