This will change the login screen, the screen you type your password. To change your desktop background and thus your lock screen, Go to Apple menu > System Preferences > Desktop & Screen Saver.Īlso note that, as you probably know, your Mac has two screens: The lock screen and the log-in screen. Again you will have to enter your admin password.ġ0. You may have to enter your admin password.Ĩ. Drag the new Mojave.heic image into the folder and exit (copy and paste). As a backup method, let us change its name to something like Original-Mojave.heic (so you can change back later). Now, on your computer, Open Finder and go to Go > Go to Folder… (or press Command-Shift-G)ĥ. Enter /Library/Desktop Pictures/ and then click Go.ħ.

You can also find images online.ģ. And then rename your image as Mojave.heic (HEIC: High Efficiency Image Format).

I created a very simple image using Pixelmator. You may want to use a photo editor such as Photoshop or Pixelmator to ensure that your image matches the resolution of the screen.Ģ. So my background photo should be this size as well. As you can see the image below, my screen resolution is 1280×800. On your Mac, go to Apple Menu > About This Mac and click the Displays tap. Use the Command-Space shortcut to launch the search bar, type in system preferences, and hit the return key to open the app. If you cannot find the app on the dock, you can use a Spotlight search to do the same. Thus you may want to know your screen resolution. Sign in to your Mac and open the System Preferences. It is important that this picture should fit the resolution of your screen. Find an image or photo to use it as a background photo. See the steps below required to change your background image when you are trying to log into it.ġ. See also: How To Screenshot (Print Screen) And Record Screen On Your Mac Update: If your Mac is running Catalina, see this article about how you can change login screen. Did you know that you can easily set any image you like as your login screen background on your Mac? This short article explains how you can customize the login screen in macOS Mojave. Changing your Mac login screen background is pretty easy.

Change mac screen saver