@giuseppebaglio _assetTransform does not work with image ref. I have already tried this option in my query still its not showing image urls. In addition after applying asset transform on query it changes all the jpg url to webp which is not the requirement.  

I have used webp images in content fragments. When I create a graphql query to get images path. The json is coming blank for those images. where as JPEG images path are showing perfectly fine. Do I need to enable webp in AEM as cloud to get images path or it is not supported in graphqlPlease advice