AI & the web
Alt text
A text alternative describing an image's purpose or information in context.
In everyday use
A chart's alt text explains the trend rather than saying “chart image”.
What to keep in mind
Decorative images may need empty alt text; avoid keyword stuffing.
Also searched as: alternative text
Further reading
Original explanation and example by Perspectism. Further reading may cover the wider subject, rather than this exact wording. Edition updated 7 October 2026.
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