alt
Use to describe visual elements to users who cannot see them, either because the image failed to load or because they are using a screen-reader.
Use to describe the contents of an image that makes the image accessible to users who use a screen reader.
Use to describe the contents of an image to:
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Make the image accessible to users who cannot see it and use a screen reader.
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Enable search engines to better crawl and rank your website.
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Enable translation tools access alt text easily for translation than the alt attribute.
Therefore, do not use the alt attribute for alternative image text.