Open your presentation in PowerPoint. On the Design tab, in the Themes group, select the theme that best fits your needs from the list. If you hover over any of them, you’ll see a preview. When you’re ready to continue, just click the theme. It will be applied to the entire presentation., PowerPoint makes it easy to apply a new template (aka a theme) to an existing presentation. Whether you’re updating your slides for a meeting, rebranding for a client, or just tired of your old layout, here’s how you can give your deck a makeover in just a few clicks., To apply the saved theme to your current PowerPoint file, go to Design -> Themes -> Browse for Themes. Select the theme file saved on your computer to apply it to your current presentation. Once the changes are applied, make sure you save your presentation with the new theme., However, as a method, you may try to create a custom theme based on theme in design ideas. After that you can simply apply your custom theme to the entire PowerPoint presentation., To apply a theme to only one or a few slides, select the slide or slides, right-click the theme you want, and select Apply to Selected Slides. By default, PowerPoint applies the plain, Office theme to new presentations. To apply a different theme, click the Design tab and choose a new theme., You can choose from a variety of new themes at any time, giving your entire presentation a consistent, professional look. Optional: Download our practice presentation..