Prestashop Automatic image ALT tag - Image SEO

Overview
Applying ALT tags to your product images will have a major impact on your store's SEO results.
 
The Image SEO - Automatic image ALT attribute module automatically fills this tag when you haven't, to improve your store's SEO.
Description
Why is ALT tag important?
 
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.
 
Improve your Site's Ranking (SEO)
Using ALT text on your images can make for a better user experience, but it may also help earn you both explicit and implicit SEO benefits. Along with implementing image title and file naming best practices, including ALT text may also contribute to image SEO.
While search engine image recognition technology has vastly improved over the years, search crawlers still can't "see" the images on a website page like we can, so it's not wise to leave the interpretation solely in their hands. If they don't understand, or get it wrong, it's possible you could either rank for unintended keywords or miss out on ranking altogether.
 
Crawlers like Google, Bing, etc. uses ALT text along with computer vision algorithms and the contents of the page to understand the subject matter of the image.
 
In that sense, ALT text offers you another opportunity to include your target keyword. With on-page keyword usage still pulling weight as a search engine ranking factor, it's in your best interest to create ALT text that both describes the image and, if possible, includes a keyword or keyword phrase you're targeting.
 
Accessibility
ALT text is a tenet of accessible web design. Its original (and still primary) purpose is to describe images to visitors who are unable to see them. This includes screen readers and browsers that block images, but it also includes users who are sight-impaired or otherwise unable to visually identify an image. Including ALT text with your images ensures all users, regardless of visual ability, can appreciate the content on your site.