Adobe Portfolio Lightroom Sync - File Format

Hi Folks,

I have a QQ: When I sync my photos from LR to my Adobe Portfolio website, and have the images added to the collection in the RAW/DNG format does the file get uploaded as the RAW/DNG or a smaller version of that image file?

So, if I go to my portfolio website, the images are uploaded in which format (source format or is there another format that portfolio site builder converts the RAW/DNG files to)?

Question comes in from the security point of view, just in case someone tries to save or pull the image from my portfolio would it be watermarked or low-res file (only if they are able to do that) or it's not possible to download the images at all?

Hoping to hear on this soon.

Regards,

Nick