On a Mac, open the Desktop preferences window and click the pull-down menu next to your selected image. On a Windows PC, go back to the Desktop Background window and fiddle with the “Picture position” setting. Want to stretch a wallpaper image to fill your entire desktop-or want to try tiling your desktop with an snapshot instead? No problem.
Here’s how to set your own user icons on your Mac: 1. You can even add a shot from your webcam. But you can also add your own, such as a photo of yourself. Every user on your Mac will have a different icon or avatar, and macOS comes with a good selection to choose from.
Open the Windows control panel (you can access it though the Start menu, or by searching for it from the Windows 8 Start screen), click Appearance and Personalization, then click the “Change Desktop background” link.Just select two or more images to start shuffling your Windows desktop wallpaper. Do you use different Mission Control desktops on your Mac? If so, you can set specific wallpaper settings for your individual desktops-meaning, for example, you could have Desktop 1 set to just a single background, while Desktop 2 shuffles through different wallpaper images every five minutes.Want your Mac to shuffle your wallpaper rather than just flip through them in order? Check the “Random order” option.Select a time interval, anything from every five seconds (which could get a little dizzying) to once a day.Pick a photo folder from the left-hand column (if you don’t see the one you want, click the little “+” button), then check the “Change picture” box at near the bottom of the window.Or, here’s an easier way to get to your wallpaper settings: just right-click on the desktop, then select “Change Desktop Background” from the menu. Click the Apple menu in the top-left corner of the screen, select System Preferences, click the Desktop & Screen Saver icon, then make sure the Desktop tab is selected.