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.

In your Merchant Center account, click the Products drop-down menu from the left-hand navigation panel. Click Feeds. Locate your feed from the list of registered files.

A feed is a stream of content that you can scroll through. The content appears in similar-looking blocks that repeat one after the other. For example a feed can be editorial (for example, a list of articles or news) or listings (for example, a list of products, services, and so forth).