* Indicates a local edit highlighting items that are not discoverable via current ADA testing software.
- Every image, video file, audio file, plug-in, etc. has an alt tag
- * Complex graphics are accompanied by detailed text descriptions
- The alt descriptions describe the purpose of the objects
- * If an image is also used as a link, make sure the alt tag describes the graphic and the link destination
- * Decorative graphics with no other function have empty alt descriptions (alt= "")
- Add captions to videos
- Add audio descriptions
- Create text transcript
- Create a link to the video rather than embedding it into web pages
- Add a link to the media player download
- Add an additional link to the text transcript
- The page should provide alternative links to the Image Map
- The <area> tags must contain an alt attribute
- Data tables have the column and row headers appropriately identified (using the <th> tag)
- * Tables used strictly for layout purposes do NOT have header rows or columns
- Table cells are associated with the appropriate headers (e.g. with the id, headers, scope and/or axis HTML attributes)
- Make sure the page does not contain repeatedly flashing images
- Check to make sure the page does not contain a strobe effect
- A link is provided to a disability-accessible page where the plug-in can be downloaded
- All Java applets, scripts and plug-ins (including Acrobat PDF files and PowerPoint files, etc.) and the content within them are accessible to assistive technologies, or else an alternative means of accessing equivalent content is provided
- When form controls are text input fields use the LABEL element
- When text is not available use the title attribute
- Include any special instructions within field labels
- Make sure that form fields are in a logical tab order
- Include a "Skip Navigation" button to help those using text readers
Courtesy of U.S. Department of Health and Human Services, excerpted from http://www.techrepublic.com/blog/web-designer/creating-an-ada-compliant-website/.
* Not listed above, but the web page must also be completely navigable via keyboard control alone.