Image Standards
- images have alt-text, except decorative only images
- text on the image is readable at 200% magnification
- text on an image has a color ration of 4.5:1 to the image
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if the same visual presentation can be made using text alone, an image is not used to present the text
- charts and graphs have text alternatives
- Images that do not convey content, are decorative or contain content that is already conveyed in text are given null alt text (alt="") or implemented as CSS backgrounds
- Equivalent alternatives to complex images are provided in context or on a separate (linked and/or referenced via longdesc) page.