Does anyone have any experience when it comes to optimizing for google shopping, im just uploading my companies products for the first time and currently waiting for them to be approved, however i was wondering if there are any ways you guys have come up with to help with rankings.

So far i have messed around with the descriptions to try and incorporate some key words as well as in the titl of the product, but from what i can see i won't be able to do any link building as they are displayed on googles site.

Dont seem to be able to add alt tags to images either, cheers