The “Duplicate Main Landmark Check” evaluates whether there is more than one main landmark.
Example outcome
I found 2 main landmarks.
Impact
Visual Impairments: Screen readers may announce multiple main landmarks, confusing the user and making navigation harder.
Motor Impairments: Keyboard navigation might become more cumbersome as users may need to skip over redundant main landmarks, leading to a less efficient browsing experience.
Cognitive Disabilities: The page structure may be unclear, leading to difficulty in identifying the main content or distinguishing it from other sections.
Fixes
To address multiple main landmarks:
Locate the different main landmarks.
Remove the ones that aren’t correctly assigned, moving the content to the correct one if necessary.