Transformed images are automatically stored in your Cloudinary account as soon as they are previewed.
The URL that features below the preview is the one to be used for embedding the image in your application.
Some extra information:
Once an image is uploaded to Cloudinary it's stored on your account as a resource, assigned a unique public-ID, and can no longer be edited (unless deleted or overridden). Once uploaded, you can generate various transformed versions based on the original image using Cloudinary's composite URLs (URL based API). For example (public-ID
Original uploaded image - http://res.cloudinary.com/demo/image/upload/couple.jpg
Face-based cropped version - http://res.cloudinary.com/demo/image/upload/w_100,ar_1,c_crop,g_face/r_max/couple.jpg
Furthermore, if you wish to edit (apply transformation to) the original image you can re-upload your image and apply an incoming-transformation to it, in order for the transformation to take effect before the image is stored.