In the window, click Desktop & Screen Saver, then click the Desktop tab to display just the desktop preferences.
If you want to use a photo from your iPhoto Library, select Library in the left pane.
Otherwise, select Choose Folder, navigate to and select the folder that contains your image, and click Choose.
In the right pane, click any thumbnail to place the image on the desktop.
Depending on the size of your chosen image, you can opt to tile or center it if it's small. Note: Your image will look pixelated or have jagged edges if it's too small. Or have the image fill the screen, or stretch to fill the screen. Just choose an item from the pop-up menu that appears above the thumbnails, the one next to the thumbnail of your current picture.
We have done a lot of research at 3D Poetry to determine the most popular mobile, tablet and desktop monitor screen resolutions. So your fantasy wallpapers don't get distorted we automatically adjust the image onto a canvas to suit your device