The page includes a server-side image map. Verify that each active region of the image map has a redundant textual link.

Make sure each active region of the image map is duplicated as a redundant link in the page. You must inspect the implementation of the image map on the server to determine the URLs that are activated when the user clicks on any of the active regions.

Server-side image maps pose big accessibility problems, including:

• Server-side image maps require specific input devices like the mouse, which may not be available to certain users in certain contexts (such as users of cellular phones or voice controlled browsers)
• Certain users in certain situations may not be able to accurately click on the map (such as disabled persons or persons walking, driving, or standing)
• The links specified by server-side image maps are hidden in the server and cannot be manipulated by browsers in any way, including any assistive technology. Therefore, the browser cannot communicate any alternative links to the user
• Server-side image maps are less efficient than their client-side counterparts because an additional interaction with the server is needed for each user click

For these reasons, the use of server-side image maps is highly discouraged. The only exception is for active regions whose shape are so irregular that client-side image maps cannot support them.