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Chapter 9. Web Site Usability and Accessibility > Images need alternate content

Images need alternate content

Alternate content is text that is included within the image tag's alt attribute. This text needs to convey the meaning of the graphic it represents. Web page authors need to include alt attributes for each image on a page, even invisible formatting images (which should actually be avoided in favor of cleaner, easier to maintain CSS for formatting). The alternate text must include the content and/or context of the graphic image. Screen‐reading technologies used by visually impaired visitors read the text of the alt attributes, so make sure you write them in a way that makes sense to visitors who can't see the images. It's not helpful to type just button graphic. A more helpful tag is Click here to see our specials. (Please note, alt attributes are only one of several coding issues that must be addressed by Web site designers who are trying to make their sites more accessible).

This is the correct way to code alt attributes:


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