Log in to your account on https://app.mangodisplay.com and choose the display you want to edit.
Click '+' on the lower right corner of your display to add a widget.
Then choose 'Background Image'
You can select from options such as:
a. Sample images - images coming from the Mango Display gallery
b. Unsplash - random images from unsplash.com with categories such as nature, animals, architecture, travel etc.
c. Google photos - you can connect your google photos account (Note: Your photos should have an album)
d. Apple photos - enter an iCloud shared album link
e. Single image URL - add a link from Dropbox, Google drive, website image etc.
f. My Files - upload an image directly from your phone/computer.
Once you've chosen your background image sources, you can edit the image settings such as crop, brightness, transition effect and image rotation timer. The transition and image rotation timer takes effect if you have enabled any image source or combined sources that have more than one image.
Click 'save'. Your display now has a background image!
If your display has multiple pages, you can choose to disable it on specific pages if needed. Simply go to the specific page and disable it from the top left section.