Alt Text, a.ka. Alt Tag or Alt Attribute is an HTML attribute applied to images you upload to your online store. It provides alternative text to help search engines identify what your image is about.
Search engines cannot interpret images. Instead, they rely on alt text to understand what the images on your Shopify store are. By adding optimized alt text on your product images, it helps your product pages to be indexed and ranked better in various search engines, like Google.