# Changing the Zoom Ratio of a Page

This topic describes how to change the zoom ratio of a page.
The zoom ratio to be applied at the time a document is opened is the one that is set on the [View] tab in the Settings dialog box.

## Using a menu

Procedure
1.
Select a zoom ratio from the [Zoom] pop-up menu.

## Using a button of the standard toolbar

In the standard toolbar are three buttons for changing the screen zoom ratio.
Clicking a button zooms the view accordingly. If you select [Fit to Page Width], the zoom ratio will change to fit to a new window size.
If you select [Zoom Out] or [Zoom In], the zoom ratio will be smaller or larger at one of 9 levels (17%, 33%, 67%, 100%, 133%, 167%, 200%, 300%, and 400%).

## Using a wheel mouse

When using a wheel mouse, you can change the zoom ratio by turning its wheel.
Note
The Zoom ratio changes regarding the top edge center of the view as a 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.
Procedure
1
With a document shown in the browser window, turn the mouse wheel away from you or towards you while holding down the <Ctrl> key.
If you turn the wheel away from you, the zoom ratio increases (the view zooms in). If you turn the wheel towards you, the zoom ratio decreases (the view zooms out). You can change the zoom ratio in steps of 10%. However, if the document is already displayed in the maximum or minimum zoom ratio, you cannot further increase or decrease the ratio.