Download Cardboard Background. Download the template by clicking on the image. Today’s freebie is a modern and simple images background, ready for PowerPoint and Keynote. Use professional quality images, instead of boring clipart to make your presentation stand out. You can use it for all your personal presentations. Make your slides attractive for the audience by adding a background to them. We present absolutely free PowerPoint background templates that you can download in. Here are some great, free PowerPoint backgrounds from us. Download a selected image format template and insert it into your presentation slides.