There is nothing in any of the Accessibility guidelines and requirements to prevent you from including images on your web page but it must be done with sensitivity to Accessibility issues. The main issues with images are making the content available to the blind and people with visual impairment. The blind are generally using assistive technologies like screen readers, but you also need to consider visual impairment like low vision or colour blindness.
It is important to distinguish between images that are important for understanding the content of the text, and images that are used as decoration. Decorative images do not need to be Accessible.
The key to accessibility with images is to provide alternative text for the content in the image. Alternative text could be regular text presented in the content surrounding the image or it could be included in the “alt” attribute tag of the image. This is important for both the blind and the visually impaired.
Text presented as an image is not Accessible. It cannot be read by screen readers and it cannot be modified using an accessible style sheet to adjust contrast or colour selection.
When using images in your content with SiteCM, make sure you include appropriate text for the alt tag.
To make this easier create alt text when you load an image to the library. Adding alt text to the image in the image library will ensure that the Alt attribute will be automatically included when the image is used so the page owner won’t have to worry about it.
It should be noted however that the context of image can have an impact on what is an appropriate Alt attribute so you should always check it.
When creating Alt attribute it should indicate both the content and function of the image which would otherwise be apparent to sighted users. If the equivalent information cannot be presented simply you can use the longdesc attribute or you can provide a link to a page with further description.
A good Alt attribute should be:
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