In order to choose the correct wallpaper, you must determine your screen size. Here are instructions in how to determine screen size for Windows and Mac machines.

For Windows Users

Right click your desktop screen. Choose Display Settings from the pop-up menu that appears.

Choose Advanced Settings at the bottom of the dialogue box.

The recommended setting will be shown on the Advanced settings page.

For my Windows laptop, the recommended size is 1366 x 768.

For Mac Users

Click the apple icon at the top right of your screen. Choose About This Mac.

When the dialogue box pops up, choose the Displays tab at the top.

Your computer’s display size will be shown there.

For my iMac, the setting is 1920 x 1080.

Read this page for instructions on how to install your desktop wallpaper.