Images

Images can be used to convey information that is difficult to convey by text alone. They can assist those with dyslexia and others who have problems processing written information. Images can also add interest to learning materials. For those who have difficulty reading images, however, you need to ensure the same, or similar, information is conveyed in, for example, a text file and that this is easily accessible to someone using a screen reader.

What constitutes an image?

Photographs, drawings, paintings, diagrams, equations, formulae, notations and symbols are all examples of images.

Topic/issue Action Comment
Size
  1. Resize to an appropriate physical size.
  2. Compress  to reduce the file size.
 
Alt text Add alt text to all images. Ensure that the text describes the purpose of the image clearly and succinctly.
Long descriptions Add a long description for images conveying complex information. Use when it would be difficult to describe an image in a few words. These can be read by screen readers.
Captions Use in Word, PowerPoint etc.  
Charts and diagrams Ensure you have a good colour contrast. Check by printing in ‘grayscale’/black and white.
Colour and contrast   See section on colour and contrast.
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