# Changing the Zoom Ratio

This topic describes how to change the zoom ratio when the document is in document view, original data view, page sorter view or continuous page view.
The zoom ratio setting is not saved when you close the document.
Note
When you are in full screen view, you can change the zoom ratio with the pop-up menu or the control panel.

## Using a button on the toolbar

The zoom toolbar of Viewer provides the drop-down combo box and buttons to change the zoom ratio of the view.

### [Zoom] drop-down combo box

Enter a zoom ratio or select a zoom ratio from the pull-down menu.
In document view or original data view, you can specify the zoom ratio by entering an integer between 10 to 1600%.
In page sorter view, you can specify an integer between 10 to 33%.

### [Zoom Out] and [Zoom In]

In document view or original data view, each time you click the button, the view is enlarged or reduced one step at a time, in the following sequence.
Note
The <+> and <-> keys can also be used to enlarge or reduce the view.

### [Fit to Whole Page] and [Fit to page width]

These options are effective in document view and original data view. As you change the window size, the zoom ratio of the page displayed is changed accordingly.

## Using the menu

You can also set the zoom ratio from the menu.
Procedure
1.
Select [Zoom] from the [View] menu.
The [Zoom] dialog box appears.
2.
Select the desired zoom ratio and click [OK].
Alternatively, you can enter an integer in the range of 10 to 1,600% for document view or original data view, or in the range of 10 to 33% for page sorter view, in [Percent]. The document is resized accordingly.

## Using a wheel mouse

When using a wheel mouse, you can change the zoom ratio by turning its wheel. The acceptable zoom ratios are 10 to 1,600% for document view or original data view, and 10 to 33% in steps of 1% for page sorter view.
With a document displayed in the window, turning the mouse wheel forward or backward while pressing the <Ctrl> key changes the zoom ratio. With a document displayed in the window, turn the mouse wheel forward or backward while pressing the <Ctrl> key.
The combination of the direction in which to scroll the mouse wheel and the effects of zooming in/out can be changed with [View] in Preferences in Viewer.
Note
The Zoom ratio is changed regarding the page center as follows.

- In Document view, the top edge center of the view is the center. Only when the mouse cursor is inside the view and the wheel is turned, the point where the cursor is placed becomes the center.
- In Full Screen view, the center of the view is the center. Only when the mouse cursor is inside the view and the wheel is turned, the point where the cursor is placed becomes the center.