Find it at: http://castfeedvalidator.com/
Light simple and effective Feed Validation tool. Up to date and accurate with what is important today.
Don’t know your feed or are in a hurry to get it validated? Cast Feed has an iTunes look up feature to help you find it.
http://validatemyfeed.com/castfeed-validator/http://validatemyfeed.com/wp-content/uploads/2015/04/castfeedvalidator1-150x150.pnghttp://validatemyfeed.com/wp-content/uploads/2015/04/castfeedvalidator1-150x150.pngFeed Validation Options