Complex Images, Tables, and Charts

ISSUE:

ALT tags may not be adequate for describing complex images, tables and charts (e.g., pie charts, line and bar graphs, or tabular information presented as a graphic). Some alternatives for conveying the information represented by these types of images are as follows:

• Convey all of the information in the text body of the document.



• Link to a full text description of the graphic using the "longdesc" attribute (e.g., <img src="table1.gif" height="xx" width="xx" border="0" alt="Table 1: Average Height by Age and Gender" longdesc="http://Table1FullDescription.html">).



• Use the graphic as a link to a complete text description of the information being conveyed.



• Provide a separate link to a complete text description of the information being conveyed.

STANDARD:

• Provide accessible text descriptions for complex images, such as graphical tables and charts.