The new 3DPhoto demo refers to uploading and downloading but it works without a network connection

https://storage.googleapis.com/tfjs-models/demos/3dphoto/index.html

is very cool but I don’t understand why it has buttons labelled upload and download when I disconnected from the network and it still worked fine (except for the download button). A real strength of TFJS is that it can run completely on the user’s browser so why all this talk of uploading and downloading?

Upload here means from your local machine to the web browser itself not to server. This term has been misused here technically speaking. It should just be something like “load” or such.