Guideline 3 : Allow configuration not to render some content that may reduce accessibility
Checkpoint 3.1 : Toggle background images
Allow configuration not to render background image content.
Sufficient techniques
The user agent may satisfy this checkpoint with a configuration to not render any images, including background images. However, user agents should satisfy this checkpoint by allowing users to turn off background images alone, independent of other types of images in content.
Normative inclusions and exclusions
This checkpoint must be satisfied for all implemented image specifications; see the section on conformance profiles.
When configured not to render background images, the user agent is not required to retrieve them until the user requests them explicitly. When background images are not rendered, user agents should render a solid background color instead; see checkpoint 4.3 for information about text colors.
This checkpoint only requires control of background images for "two-layered" renderings, where the background is considered the first layer and everything rendered above it is considered the second layer.