To set your computer’s wallpaper, just select the resolution by clicking the appropriate link in yellow. Then follow the steps below:
Right click the image and save to your computer.
Find your saved photo, right click it and press ‘set as wallpaper’.
If your image doesn’t display perfectly, please set your desktop background image to “Stretch”.
Save the image to your hard disk. You can do this by dragging it to your desktop in many cases.
Open preferences on your mac and go to “Desktop & Screen Saver”. Press the + button in the lower left. Select the image on your hard drive.
If your image doesn’t display perfectly, please set your desktop background image to “Fill Screen”.