Background
Use web image
- Download and install Firefox from the App Center.
- Navigate to the picture using Firefox.
- Right click the image and select Set As Desktop Background...
- Click Set Desktop Background.
Firefox Developer
Free
Use local image
- Download and install Firefox from the App Center.
- Navigate to a local image.
- Right click the image and select Open with> Firefox.
- In Firefox, right click the image and select Set As Desktop Background...
- Click Set Desktop Background.
Firefox Developer
Free