How to Change Your Background on a Chromebook?

Right-click the desktop

Select Set wallpaper and style

Choose Wallpaper

Select an image from the Chromebook wallpaper gallery or your files

Click Set wallpaper

To use your own photo, select My images

Choose the picture you want

Click Open or Set wallpaper

To change the background color, open Set wallpaper and style

Select a solid color or theme option if available

To use a different background on the lock screen, choose the appropriate wallpaper setting if shown