The “Duplicate Banner Landmark Check” evaluates whether there is more than one banner landmark.
Example outcome
I found 2 banner landmarks.
Impact
Visual Impairments: Multiple banner landmarks may lead to confusion as screen readers will read them out as “banner”, which might mislead users into thinking the information is repeated.
Motor Impairments: Keyboard navigation might become more cumbersome, requiring the user to navigate through multiple banners, leading to a longer time to find the actual content.
Cognitive Disabilities: Redundant banners could create confusion about the page structure, potentially leading to difficulty in understanding the site’s layout.
Fixes
To address multiple banner landmarks:
Locate the different banner landmarks.
Remove the ones that aren’t correctly assigned, moving the content to the correct one if necessary.