Alt Tags
In email marketing, alt tags help to describe an image when a subscriber's email client blocks the images in your email. Alt tags are very useful when creating emails that will be easily accessible for each of your subscribers.
Other definitions
Big commerce
An alt tag, also known as "alt attribute" and "alt description," is an HTML attribute applied to image tags to provide a text alternative for search engines. Applying images to alt tags such as product photos can positively impact an eCommerce store's search engine rankings.
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Alt tags are metadata that offer text descriptions of web images for search engines and screen readers for the visually impaired. As a best practice, they often include text that may appear on the image or a simple summary of the graphic.
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