Alt text (short for alternative text) is an HTML attribute used to describe the content of an image on a web page. It is typically used when an image cannot be displayed for some reason, such as a slow connection or a user with a visual impairment using a screen reader.
In terms of SEO, alt text plays an important role in helping search engines understand the content of a web page, and in determining its relevance and quality. By including relevant and accurate alt text, website owners and digital marketers can help ensure that their pages are properly indexed by search engines and appear in the search engine results pages (SERPs) for relevant keywords and phrases.
Alt text can also improve the user experience by providing a text description of the content of an image, which can be helpful for users with visual impairments or slow connections.
Overall, alt text is an important aspect of the on-page optimization process and is a useful tool for optimizing a web page’s visibility, ranking, and user experience in search engine results.