Client-side and server-side image maps need redundant text links; no major graphical browser provides access to the
alt attribute of the
area element for client-side image maps, and server-side image maps have no ability to identify links from the browser. For client-side image maps, in addition to the redundant text links, the
alt attribute should still be provided for each of
area elements with the destination of the link as the content.
Benefits to People with Disabilities
- Functionalities of the image maps are available to the screen reader users the redundant text links.
- The alt attributes of the client-side image maps help identify the targets of the image map links if and when the browser renders the alt attribute for area elements.
Benefits to Everyone
- Users of technologies that do not support images can access the link on the image maps through the redundant text links.
Benefits to Developers
- Using link text that indicates the target of a link makes it easier to find and update links on web resources.
- Search engines have more accurate information on the content of the link for generating search results.
altattribute of an area element should describe the target of the link
Related Accessibility Requirements
- § 1194.22.a A text equivalent for every non-text element shall be provided (e.g., via "alt", "longdesc", or in element content).