Alt Text
A written description of an image in a page's HTML, used by screen readers and search engines to understand what the image shows.
Alt text (alternative text) is a short written description attached to an image. Screen readers read it aloud for visually impaired users, and search engines use it to understand image content.
Good practice
Describe the image plainly and accurately. Avoid stuffing keywords — write what the image actually shows, as if explaining it to someone who can’t see it.
Why it matters
Alt text improves accessibility (a requirement, not a nice-to-have) and helps your images surface in image search.
Related Terms
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301 Redirect
A permanent redirect that sends visitors and search engines from an old URL to a new one, passing along most of the old page's ranking value.
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Anchor Text
The visible, clickable words of a hyperlink, which give readers and search engines a clue about the linked page's topic.
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Backlink
A link from one website to another. Backlinks act as votes of confidence that help search engines judge a site's authority.