The importance of alt text in e-commerce product images for SEO purposes
The ALT tag is very useful for contextualizing the meaning of an image and expressing its content through the keywords for which we want to position the images. It allows us to reduce the risk of misinterpretation and to focus attention on specific keywords.
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In particular, the ALT tag allows you to:
specify the information to be transmitted to search engines
define more clearly the context to which the images belong
attract new visitors thanks to the greater completeness of the images
make images more inviting for visitors and more easily understandable for search engines, to position themselves more easily
distinguish the thematic identity of the images
Can you be penalized for missing an ALT tag?
The absence of ALT tags set is not an aspect subject to penalties by Google. Providing descriptions, however, allows you to increase the Page Quality Score and consequently the positioning.
In any case, not all images require an ALT field enhancement. Let's think about those images that are placed for design or navigation purposes, which do not provide information to the reader: in this case, it is not necessary to give values to the ALT fields.