Provide meaningful descriptions of images

• Develop alternative text for all meaningful images. "Alternative text" is not a caption. Appropriate alternate text is a short description of an image that a screen reader can access and "read" to the user. Without alt text, the visually disabled user will miss the image and its meaning.
• Describe complex images in the page content. For complex images, alt text isn't sufficient information. Describe in the text why the image is significant and what it demonstrates.
• Summarize graphs and charts. Be sure the caption explains the purpose, and provide a description of why the graph or chart is important and what it conveys.
• Identify embedded multimedia with accessible text. Include a descriptive label for any audio, video, or Flash on a page. Include text for any non-text content of the multimedia. Guidelines for providing descriptions of non-text content are available.