You can also open up the Format Background dialog box to change the background style of your slides. This gives you more options to play around with for your template. Once you find a background you like, you can then change the Theme or Variant in the PowerPoint Design tab. You can then select from the display or use the Category search function on the right-hand side. When you open PowerPoint and select to build a new slide show, type a search term into the search bar to find a template that fits your presentation’s style, such as “abstract” or “dark”: If you’re not satisfied with one of these default templates, you can search for other free templates online, from Microsoft’s huge database. When you start a new presentation, you will a wide variety of presentation styles to choose from (as pictured below).
Free Microsoft PowerPoint Slide BackgroundsDon’t forget that you have many free PowerPoint background options from Microsoft Office.