Alternative text of images should not be repeated as text

When button and link text in an alt property value repeats, screen reader users hear the same information twice, rendering the alt text worthless and confusing.

It is redundant and potentially misleading to have alternate text for a link or image repeated in text adjacent to the link or image because a screen reader would read it twice.

Because image buttons employ alt attributes for labels, the labels should not repeat the text next to the button. Screen readers announce the text to the user twice when there is duplicate alternative text for an image or link in the text adjacent to that image or link.

What this Accessibility Rule Checks

Make certain that the button and link text are not repeated as picture alternatives.

Learn more:

Deque Reference

Deque University - How To Fix

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W3C Reference

WCAG 2.1 - Failure of Success Criterion 1.1.1 due to omitting the alt attribute or text alternative on img elements, area elements, and input elements of type 'image'

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