The XML schema for Google Product Review Feeds defines the acceptable structure of your XML feed. XML schemas use the . xsd file extension. Like DTD files, an XML schema defines the elements and attributes that can appear in an XML document.

For apparel products, images must be at least 250 x 250 pixels and cannot be larger than 64 megapixels. For all other products, images must be at least 100 x 100 pixels and cannot be larger than 64 megapixels. Images can't be larger than 16MB in file size. Do not scale up images or submit thumbnails.

Stay organized with collections Save and categorize content based on your preferences. You must host your own XML feed, and it must be accessible via HTTP or HTTPS. You can supply a single XML file or multiple XML files bundled together in a single .

To find the Google category of your products, you have to look at the taxonomy list offered and updated by Google pretty often. Here's the list. This list contains more than 6000 product categories and subcategories for you to choose from.