Yes, but as a link. GoCanvas allows you to take photos, capture signatures, and draw using your iOS and Android devices. Those images are viewable in the PDF either in the portal or in your cloud storage of your choice. When submission data is downloaded, data collected with those field types will be shown as a link.
GoCanvas users can also download their submitted data in bulk form as a comma separated value (abbreviated CSV). CSV is limited, however, to text only. Therefore images such as photos, signatures, or drawings cannot be included in the CSV. The export does include a link back to where the image can be viewed and downloaded.