Software & Apps MS Office How to Increase PowerPoint Slide Number Size A tutorial on increasing PowerPoint slide number size By Wendy Russell Writer Former Lifewire writer Wendy Russell is an experienced teacher specializing in live communications, graphics design, and PowerPoint software. our editorial process Wendy Russell Updated February 12, 2020 MS Office Powerpoint Word Excel Outlook Tweet Share Email Make the slide numbers in your PowerPoint presentations stand out by increasing the size of the slide number font. To increase the font size, open the Master Slide and use one of two methods to change the slide number. Changes on the Slide Master are applied to every slide in your presentation. Instructions in this article apply to PowerPoint 2019, 2016, 2013, 2010, 2007, and PowerPoint for Office 365. Change Slide Number Size on the PowerPoint Slide Master The Slide Master controls the look of an entire presentation, including the slide numbers. When you want every slide number to look the same, change the slide number in the Slide Master. To access the PowerPoint Slide Master: On the ribbon, go to View. Select Slide Master. Select the Slide Master thumbnail (it's the top slide in the Slide pane). This is where you'll change the font size of the slide number placeholder. Increase the Font Size to Change the PowerPoint Slide Number Size There are two different ways to change the font size of the slide number placeholder. Both methods are quick and easy. For both methods, find the slide number placeholder first. Double-click the slide number placeholder to change the font size: On the Slide Master slide, locate the slide number placeholder. The placeholder is a # sign and the location varies depending on the template you use. In this example, the placeholder is near the top right of the screen. Double-click the slide number placeholder to display the Font toolbar. Select the Font Size dropdown arrow and choose a larger size font for the slide number. Right-click on the slide number placeholder to change the font size: On the Slide Master slide, right-click on the slide number placeholder. This displays the Font toolbar, as well as other options for this placeholder. Select the Font Size dropdown arrow and choose a larger size font for the slide number. After you've selected a larger font size and are happy with your changes, select Close Master View to exit the Slide Master View. All the slides in your presentation are updated and display the larger slide number.