By default, all versions of PowerPoint show you a preview when you add an animation to any slide object. While this is a great option for those who are new to PowerPoint animation, you will certainly not like this automatic preview feature if you are an advanced user. Yes, these previews can be irritating, especially if you add timed animations of longer duration — may be a 20-second animation. You will then have to wait until PowerPoint shows you the preview you did not ask for. Make a small change and you get another 20-second preview. If you are creating a slide with ten animations, the wait for each preview to happen can become quite frustrating!!
Fortunately, it is easy to turn off these previews in PowerPoint 2010 and 2013 for Windows. Just access the Animations tab of the Ribbon, and find the Preview button located towards the extreme left, as shown in Figure 1, below. Click the downward-pointing arrow on the bottom half of this button to bring up a small menu. Within this menu, make sure that the AutoPreview option has no checkmark. You can click once to remove the checkmark.
Figure 1: Turn off Animation Preview
Now your animations will not preview automatically!
In PowerPoint 2007, there’s no equivalent way to turn off these animation previews within the Ribbon. If you discover a way, please share your thoughts by adding a comment to this page.