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Overview of alt text

Credit for the following goes to https://webaim.org/techniques/alttext/

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  • Adding alternative text to images is one of the easiest accessibility principles to learn and one of the hardest to master.
  • Alternative text may be provided in the alt attribute or in the surrounding context of the image.
  • Every image must have an alt attribute.
  • Alternative text should:
    • present the CONTENT and FUNCTION of the image.
    • be succinct.
  • Alternative text should not:
    • be redundant (be the same as adjacent or body text).
    • use the phrases "image of…" or "graphic of…".
  • Appropriate alternative text depends heavily on the image's context.
  • Alt text of a functional image (e.g., an image within a link) should describe the function as well as the content.
  • Decorative images still need an alt attribute, but it should be null (alt="").

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Add alt text in the Insert Image dialog

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