If you're downloading it from a free stock photo website, don't automatically download the highest resolution. Pro Tip 1: Resize the image before you insert it into your presentation. If you can't check it, it means your images are below 150 ppi and you need to find higher-quality ones
On-screen (150 ppi) - For screen viewing - We recommend going for this option.Print (220 ppi) - For printing purposes.Select one of the following in the 'Picture Quality' box:.Select if you want to compress only the selected image or all images.Select the 'Compress' button under 'Picture Tools'.If you want to compress all images, click on any image. Select the image you want to compress.Here's how: Compress your images Applies To: PowerPoint for Office 365, PowerPoint 2016 One of the most commonly asked questions both online and offline is how to compress a PowerPoint presentation. If there's a specific tip you want to know, drop us a comment below and we'll make sure to write about it. Welcome to a new series here on our blog, where we’ll be sharing practical tips to help you create better presentations.