Images have equivalent text alternatives.
Goal
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What to do
- Remove, hide, or mask the image.
- Replace it with the text alternative.
- Check that the meaning is substantively equivalent
- the purpose of the non-text content is met by the text alternative.
- The way the content is presented is using the most appropriate, accessibility-supported (math, code samples, etc.)
- If the non-text content contains words that are important to understanding the content, the words are included in the text alternative.
- If the non-text content duplicates adjacent text, the alternative may be null.
Definitions
- Image - a visual representation of something.
- Equivalent to the image - text or audio which serves an equivalent purpose to what presenting the image achieves. Where text is embedded in an image that text is included in the equivalent unless it is incidental text from a photo (e.g. a street sign in a photo of a town).
- Decorative image - serving only an aesthetic purpose, providing no information, and having no functionality Removing the image would not affect the meaning or function of the page.
- Complex image - an image which requires more than one or two sentences to describe the contents.
- Text - a sequence of characters that can be programmatically determined, where the sequence is expressing something in human language.