adjust the image size on your external monitor. Source: Android Central drop-down box under Night Light. Select Source: Android Central This should get your monitor in the right position, density, and format for you to take full advantage of it. Time to double your digital real estate and see how much faster you get done with those monthly reports. Display Size and how it differs from Resolution While other operating systems have you change the size of items on your system by changing the actual resolution on your screen, that's not how Chromebooks behave. No matter what size you have your Display Size set to on Chrome OS, the Chromebook's included screen will output at its native resolution. That means even though I have Display Size set to 1536 x 864 pixels on my Lenovo ThinkPad C13 Yoga Chromebook, the screen is still outputting 1920 x 1080 pixels — and all of my content and screenshots are at that resolution as well.